Battle against the Workflow History List (part 1)

In the journey towards a new NoCode lifestyle for SharePoint Workflows, I found a big enemy : the Workflow History List.
I was defeated by the Description Field on that list because of its limitation to 255 characters. Argh !

The problem is I MUST log to the History List messages bigger than 255 characters.
Looking around in the SharePoint galaxy I did not find any serious explanation and workarounds. Argh !

So, once again, a new expedition has to be launched in the SharePoint Galaxy !

I started my new favorite tool (SharePoint Designer 2010), navigate, through the Site Objects Pane, to the workflow history list, and from there to the administration page and from there I tried to modify the Description Column : no way to change the MaxLength of the associated text field and no way to delete and recreate the column. Argh !
The NoCode way-of-life is much more difficult than anticipated.

Come back to google as usual to gather more information against my new enemy. The result of this search was : do the job through the SharePoint Object Model. Sounds great, I feel back home !

I started again my old favorite tool (Visual Studio 2010) and started a new SharePoint Console Application project (one of the projects that come with the CKS - Development Tools Edition).
I naively wrote the following code :

   1:  SPSite mySiteCollection = new SPSite("http://sharepoint2010:100/");

   2:  SPWeb myWebSite = mySiteCollection.RootWeb;

   3:  SPList myHistoryList = myWebSite.Lists[@"Traitement de demande d'absence - Historique"];

   4:  SPFieldText myField = myHistoryList.Fields["Description"] as SPFieldText;

   5:  myField.MaxLength = 1024;

   6:  myField.Update();

At F5, code execution stops with an exception at line 5. Argh!

I started my another favorite tool for that kind of problem : Reflector.
SPFieldText.MaxLength property Setter code as shown by reflector :

   1:   set

   2:      {

   3:          if ((value < 1) || (value > 0xff))

   4:          {

   5:              throw new ArgumentOutOfRangeException();

   6:          }

   7:          base.SetFieldAttributeValue("MaxLength", Convert.ToString(value));

   8:      }

No way ! If value is > 0xff (ie 256) then go home!
So the Description column, in the Workflow History List, cannot be greater than 256 characters.
It could be lower than 255 but not greater : it makes no sense for a Description column !!

Ok but what if we could go directly to line 7 of the above code snippet ?
Great, it seems the battle is not lost !

After digging the code underlying the SetFieldAttributeValue method, I found there could be a way to do the job through the SchemaXml property of the SPField base class.
So I naively change my code to :

   1:  SPSite mySiteCollection = new SPSite("http://sharepoint2010:100/");

   2:  SPWeb myWebSite = mySiteCollection.RootWeb;

   3:  SPList myHistoryList = myWebSite.Lists[@"Traitement de demande d'absence - Historique"];

   4:  SPFieldText myField = myHistoryList.Fields["Description"] as SPFieldText;

   5:  string myXML = myField.SchemaXml;

   6:  myXML = AddAttribute(myXML,"MaxLength", 1024);

   7:  myField.SchemaXml = myXML;

   8:  myField.Update();

The AddAttributeMethod is a private method that just add the attribute MaxLength="1024" to the XML Schema of the column.

At F5, no exception, code runs correctly BUT the SchemaXML is never changed ! Argh!
So now I have to go the Getter code of the SchemaXML.
SchemaXML property Getter code as shown by Reflector :

   1:  return this.Fields.Web.Request.LocalizeText(this.SchemaXmlWithResourceTokens, (uint) this.Fields.Web.UICulture.LCID, "core", true);

Ok ! the SchemaXML content comes from the content of the SchemaXMLWithResourceTokens property of the SPField base class. Argh !
It seems to be a design problem in the SharePoint API. The SchemaXML property should have been set has readonly!
The problem now is that there is no way to modify the content of the SchemaXMLWithResourceTokens property (this property is readonly). Argh !

But wait a minute, it seems the battle is still not lost !
Why not simply deleting the column and creating it again using a well known pattern for creating new column on a list :

   1:  myHistoryList.Fields.AddFieldAsXml(myXML);

   2:  myHistoryList.Update();

So I naively change my code to :

   1:  SPWeb myWebSite = mySiteCollection.RootWeb;

   2:  SPList myHistoryList = myWebSite.Lists[@"Traitement de demande d'absence - Historique"];

   3:  SPFieldText myField = myHistoryList.Fields["Description"] as SPFieldText;

   4:  myField.AllowDeletion = true;

   5:  myField.Sealed = false;

   6:  myField.Delete();

 At F5, code execution stops with an exception at line 5. Argh!
   
So now I have to analyze the Delete method with Reflector. The most interesting part of the code shown by Reflector is not the code itself but the attributes placed on the method.
By reading those attributes you can understand that a column cannot be deleted if :

• the Sealed property is set to true 
• the ReadOnlyField property is set to true
• the AllowDeletion property is set to false
• The Hidden Property is set to true
• The column is inherited from the list's base type

It could be any combination of the above that makes the column undeletable.

By digging further with Reflector the Setter code of the Sealed property, I discovered that ultimately if the ID of the column is inside the following list then the column is truely UNDELETABLE :

   1:  static SPBuiltInFieldId()

   2:  {

   3:      ContentTypeId = new Guid("{03e45e84-1992-4d42-9116-26f756012634}");

   4:      ContentType = new Guid("{c042a256-787d-4a6f-8a8a-cf6ab767f12d}");

   5:      ID = new Guid("{1d22ea11-1e32-424e-89ab-9fedbadb6ce1}");

   6:      Modified = new Guid("{28cf69c5-fa48-462a-b5cd-27b6f9d2bd5f}");

   7:      Created = new Guid("{8c06beca-0777-48f7-91c7-6da68bc07b69}");

   8:      Author = new Guid("{1df5e554-ec7e-46a6-901d-d85a3881cb18}");

   9:      Editor = new Guid("{d31655d1-1d5b-4511-95a1-7a09e9b75bf2}");

  10:      owshiddenversion = new Guid("{d4e44a66-ee3a-4d02-88c9-4ec5ff3f4cd5}");

  11:      Subject = new Guid("{76a81629-44d4-4ce1-8d4d-6d7ebcd885fc}");

  12:      _Author = new Guid("{246d0907-637c-46b7-9aa0-0bb914daa832}");

  13:      _Category = new Guid("{0fc9cace-c5c2-465d-ae88-b67f2964ca93}");

  14:      _Status = new Guid("{1dab9b48-2d1a-47b3-878c-8e84f0d211ba}");

  15:      FileRef = new Guid("{94f89715-e097-4e8b-ba79-ea02aa8b7adb}");

  16:      FileDirRef = new Guid("{56605df6-8fa1-47e4-a04c-5b384d59609f}");

  17:      Last_x0020_Modified = new Guid("{173f76c8-aebd-446a-9bc9-769a2bd2c18f}");

  18:      Created_x0020_Date = new Guid("{998b5cff-4a35-47a7-92f3-3914aa6aa4a2}");

  19:      File_x0020_Size = new Guid("{8fca95c0-9b7d-456f-8dae-b41ee2728b85}");

  20:      FSObjType = new Guid("{30bb605f-5bae-48fe-b4e3-1f81d9772af9}");

  21:      PermMask = new Guid("{ba3c27ee-4791-4867-8821-ff99000bac98}");

  22:      CheckoutUser = new Guid("{3881510a-4e4a-4ee8-b102-8ee8e2d0dd4b}");

  23:      VirusStatus = new Guid("{4a389cb9-54dd-4287-a71a-90ff362028bc}");

  24:      InstanceID = new Guid("{50a54da4-1528-4e67-954a-e2d24f1e9efb}");

  25:      _CheckinComment = new Guid("{58014f77-5463-437b-ab67-eec79532da67}");

  26:      MetaInfo = new Guid("{687c7f94-686a-42d3-9b67-2782eac4b4f8}");

  27:      _Level = new Guid("{43bdd51b-3c5b-4e78-90a8-fb2087f71e70}");

  28:      _IsCurrentVersion = new Guid("{c101c3e7-122d-4d4d-bc34-58e94a38c816}");

  29:      _HasCopyDestinations = new Guid("{26d0756c-986a-48a7-af35-bf18ab85ff4a}");

  30:      _CopySource = new Guid("{6b4e226d-3d88-4a36-808d-a129bf52bccf}");

  31:      _ModerationStatus = new Guid("{fdc3b2ed-5bf2-4835-a4bc-b885f3396a61}");

  32:      _ModerationComments = new Guid("{34ad21eb-75bd-4544-8c73-0e08330291fe}");

  33:      Title = new Guid("{fa564e0f-0c70-4ab9-b863-0177e6ddd247}");

  34:      WorkflowVersion = new Guid("{f1e020bc-ba26-443f-bf2f-b68715017bbc}");

  35:      Attachments = new Guid("{67df98f4-9dec-48ff-a553-29bece9c5bf4}");

  36:      Edit = new Guid("{503f1caa-358e-4918-9094-4a2cdc4bc034}");

  37:      LinkTitleNoMenu = new Guid("{bc91a437-52e7-49e1-8c4e-4698904b2b6d}");

  38:      LinkTitle = new Guid("{82642ec8-ef9b-478f-acf9-31f7d45fbc31}");

  39:      SelectTitle = new Guid("{b1f7969b-ea65-42e1-8b54-b588292635f2}");

  40:      Order = new Guid("{ca4addac-796f-4b23-b093-d2a3f65c0774}");

  41:      GUID = new Guid("{ae069f25-3ac2-4256-b9c3-15dbc15da0e0}");

  42:      WorkflowInstanceID = new Guid("{de8beacf-5505-47cd-80a6-aa44e7ffe2f4}");

  43:      UniqueId = new Guid("{4b7403de-8d94-43e8-9f0f-137a3e298126}");

  44:      ProgId = new Guid("{c5c4b81c-f1d9-4b43-a6a2-090df32ebb68}");

  45:      FileLeafRef = new Guid("{8553196d-ec8d-4564-9861-3dbe931050c8}");

  46:      ScopeId = new Guid("{dddd2420-b270-4735-93b5-92b713d0944d}");

  47:      EmailSender = new Guid("{4ce600fb-a927-4911-bfc1-11076b76b522}");

  48:      EmailTo = new Guid("{caa2cb1e-a124-4068-9496-14feef1a901f}");

  49:      EmailCc = new Guid("{a6af6df4-feb5-4dbf-bef6-d81230d4a071}");

  50:      EmailFrom = new Guid("{e7cb6f60-f676-4b1d-89a3-975b6bc78cad}");

  51:      EmailSubject = new Guid("{072e9bb6-a643-44ce-b6fb-8b574a792556}");

  52:      EmailCalendarUid = new Guid("{f4e00567-8a9d-451b-82d4-a4447f9bd9a5}");

  53:      EmailCalendarSequence = new Guid("{7a0cb12b-c70c-4f99-99f1-a232783a87d7}");

  54:      EmailCalendarDateStamp = new Guid("{32f182ba-284e-4a87-93c3-936a6585af39}");

  55:      _UIVersion = new Guid("{7841bf41-43d0-4434-9f50-a673baef7631}");

  56:      _UIVersionString = new Guid("{dce8262a-3ae9-45aa-aab4-83bd75fb738a}");

  57:      Modified_x0020_By = new Guid("{822c78e3-1ea9-4943-b449-57863ad33ca9}");

  58:      Created_x0020_By = new Guid("{4dd7e525-8d6b-4cb4-9d3e-44ee25f973eb}");

  59:      File_x0020_Type = new Guid("{39360f11-34cf-4356-9945-25c44e68dade}");

  60:      HTML_x0020_File_x0020_Type = new Guid("{0c5e0085-eb30-494b-9cdd-ece1d3c649a2}");

  61:      _SourceUrl = new Guid("{c63a459d-54ba-4ab7-933a-dcf1c6fadec2}");

  62:      _SharedFileIndex = new Guid("{034998e9-bf1c-4288-bbbd-00eacfc64410}");

  63:      LinkFilenameNoMenu = new Guid("{9d30f126-ba48-446b-b8f9-83745f322ebe}");

  64:      _EditMenuTableStart = new Guid("{3c6303be-e21f-4366-80d7-d6d0a3b22c7a}");

  65:      _EditMenuTableEnd = new Guid("{2ea78cef-1bf9-4019-960a-02c41636cb47}");

  66:      LinkFilename = new Guid("{5cc6dc79-3710-4374-b433-61cb4a686c12}");

  67:      SelectFilename = new Guid("{5f47e085-2150-41dc-b661-442f3027f552}");

  68:      DocIcon = new Guid("{081c6e4c-5c14-4f20-b23e-1a71ceb6a67c}");

  69:      ServerUrl = new Guid("{105f76ce-724a-4bba-aece-f81f2fce58f5}");

  70:      EncodedAbsUrl = new Guid("{7177cfc7-f399-4d4d-905d-37dd51bc90bf}");

  71:      BaseName = new Guid("{7615464b-559e-4302-b8e2-8f440b913101}");

  72:      FileSizeDisplay = new Guid("{78a07ba4-bda8-4357-9e0f-580d64487583}");

  73:      Body = new Guid("{7662cd2c-f069-4dba-9e35-082cf976e170}");

  74:      Expires = new Guid("{6a09e75b-8d17-4698-94a8-371eda1af1ac}");

  75:      URL = new Guid("{c29e077d-f466-4d8e-8bbe-72b66c5f205c}");

  76:      _Comments = new Guid("{52578fc3-1f01-4f4d-b016-94ccbcf428cf}");

  77:      _EndDate = new Guid("{8a121252-85a9-443d-8217-a1b57020fadf}");

  78:      EndDate = new Guid("{2684f9f2-54be-429f-ba06-76754fc056bf}");

  79:      URLwMenu = new Guid("{2a9ab6d3-268a-4c1c-9897-e5f018f87e64}");

  80:      URLNoMenu = new Guid("{aeaf07ee-d2fb-448b-a7a3-cf7e062d6c2a}");

  81:      LastNamePhonetic = new Guid("{fdc8216d-dabf-441d-8ac0-f6c626fbdc24}");

  82:      FirstName = new Guid("{4a722dd4-d406-4356-93f9-2550b8f50dd0}");

  83:      FirstNamePhonetic = new Guid("{ea8f7ca9-2a0e-4a89-b8bf-c51a6af62c73}");

  84:      FullName = new Guid("{475c2610-c157-4b91-9e2d-6855031b3538}");

  85:      CompanyPhonetic = new Guid("{034aae88-6e9a-4e41-bc8a-09b6c15fcdf4}");

  86:      Company = new Guid("{038d1503-4629-40f6-adaf-b47d1ab2d4fe}");

  87:      JobTitle = new Guid("{c4e0f350-52cc-4ede-904c-dd71a3d11f7d}");

  88:      WorkPhone = new Guid("{fd630629-c165-4513-b43c-fdb16b86a14d}");

  89:      HomePhone = new Guid("{2ab923eb-9880-4b47-9965-ebf93ae15487}");

  90:      CellPhone = new Guid("{2a464df1-44c1-4851-949d-fcd270f0ccf2}");

  91:      WorkFax = new Guid("{9d1cacc8-f452-4bc1-a751-050595ad96e1}");

  92:      WorkAddress = new Guid("{fc2e188e-ba91-48c9-9dd3-16431afddd50}");

  93:      _Photo = new Guid("{1020c8a0-837a-4f1b-baa1-e35aff6da169}");

  94:      WorkCity = new Guid("{6ca7bd7f-b490-402e-af1b-2813cf087b1e}");

  95:      WorkState = new Guid("{ceac61d3-dda9-468b-b276-f4a6bb93f14f}");

  96:      WorkZip = new Guid("{9a631556-3dac-49db-8d2f-fb033b0fdc24}");

  97:      WorkCountry = new Guid("{3f3a5c85-9d5a-4663-b925-8b68a678ea3a}");

  98:      WebPage = new Guid("{a71affd2-dcc7-4529-81bc-2fe593154a5f}");

  99:      Priority = new Guid("{a8eb573e-9e11-481a-a8c9-1104a54b2fbd}");

 100:      TaskStatus = new Guid("{c15b34c3-ce7d-490a-b133-3f4de8801b76}");

 101:      PercentComplete = new Guid("{d2311440-1ed6-46ea-b46d-daa643dc3886}");

 102:      AssignedTo = new Guid("{53101f38-dd2e-458c-b245-0c236cc13d1a}");

 103:      TaskGroup = new Guid("{50d8f08c-8e99-4948-97bf-2be41fa34a0d}");

 104:      StartDate = new Guid("{64cd368d-2f95-4bfc-a1f9-8d4324ecb007}");

 105:      TaskDueDate = new Guid("{cd21b4c2-6841-4f9e-a23a-738a65f99889}");

 106:      WorkflowLink = new Guid("{58ddda52-c2a3-4650-9178-3bbc1f6e36da}");

 107:      OffsiteParticipant = new Guid("{16b6952f-3ce6-45e0-8f4e-42dac6e12441}");

 108:      OffsiteParticipantReason = new Guid("{4a799ba5-f449-4796-b43e-aa5186c3c414}");

 109:      WorkflowOutcome = new Guid("{18e1c6fa-ae37-4102-890a-cfb0974ef494}");

 110:      WorkflowName = new Guid("{e506d6ca-c2da-4164-b858-306f1c41c9ec}");

 111:      TaskType = new Guid("{8d96aa48-9dff-46cf-8538-84c747ffa877}");

 112:      FormURN = new Guid("{17ca3a22-fdfe-46eb-99b5-9646baed3f16}");

 113:      FormData = new Guid("{78eae64a-f5f2-49af-b416-3247b76f46a1}");

 114:      EmailBody = new Guid("{8cbb9252-1035-4156-9c35-f54e9056c65a}");

 115:      HasCustomEmailBody = new Guid("{47f68c3b-8930-406f-bde2-4a8c669ee87c}");

 116:      SendEmailNotification = new Guid("{cb2413f2-7de9-4afc-8587-1ca3f563f624}");

 117:      PendingModTime = new Guid("{4d2444c2-0e97-476c-a2a3-e9e4a9c73009}");

 118:      Completed = new Guid("{35363960-d998-4aad-b7e8-058dfe2c669e}");

 119:      WorkflowListId = new Guid("{1bfee788-69b7-4765-b109-d4d9c31d1ac1}");

 120:      WorkflowItemId = new Guid("{8e234c69-02b0-42d9-8046-d5f49bf0174f}");

 121:      ExtendedProperties = new Guid("{1c5518e2-1e99-49fe-bfc6-1a8de3ba16e2}");

 122:      AdminTaskAction = new Guid("{7b016ee5-70aa-4abb-8aa3-01795b4efe6f}");

 123:      AdminTaskDescription = new Guid("{93490584-b6a8-4996-aa00-ead5f59aae0d}");

 124:      AdminTaskOrder = new Guid("{cf935cc2-a00c-4ad3-bca1-0865ab15afc1}");

 125:      Service = new Guid("{48b4a73e-8853-44ac-83a8-3a4bd59ce9ec}");

 126:      SystemTask = new Guid("{af0a3d4b-3ceb-449e-9bf4-51103f2032e3}");

 127:      Location = new Guid("{288f5f32-8462-4175-8f09-dd7ba29359a9}");

 128:      fRecurrence = new Guid("{f2e63656-135e-4f1c-8fc2-ccbe74071901}");

 129:      WorkspaceLink = new Guid("{08fc65f9-48eb-4e99-bd61-5946c439e691}");

 130:      EventType = new Guid("{5d1d4e76-091a-4e03-ae83-6a59847731c0}");

 131:      UID = new Guid("{63055d04-01b5-48f3-9e1e-e564e7c6b23b}");

 132:      RecurrenceID = new Guid("{dfcc8fff-7c4c-45d6-94ed-14ce0719efef}");

 133:      EventCanceled = new Guid("{b8bbe503-bb22-4237-8d9e-0587756a2176}");

 134:      Duration = new Guid("{4d54445d-1c84-4a6d-b8db-a51ded4e1acc}");

 135:      RecurrenceData = new Guid("{d12572d0-0a1e-4438-89b5-4d0430be7603}");

 136:      TimeZone = new Guid("{6cc1c612-748a-48d8-88f2-944f477f301b}");

 137:      XMLTZone = new Guid("{c4b72ed6-45aa-4422-bff1-2b6750d30819}");

 138:      MasterSeriesItemID = new Guid("{9b2bed84-7769-40e3-9b1d-7954a4053834}");

 139:      Workspace = new Guid("{881eac4a-55a5-48b6-a28e-8329d7486120}");

 140:      IssueStatus = new Guid("{3f277a5c-c7ae-4bbe-9d44-0456fb548f94}");

 141:      Comment = new Guid("{6df9bd52-550e-4a30-bc31-a4366832a87f}");

 142:      Comments = new Guid("{9da97a8a-1da5-4a77-98d3-4bc10456e700}");

 143:      Category = new Guid("{6df9bd52-550e-4a30-bc31-a4366832a87d}");

 144:      RelatedIssues = new Guid("{875fab27-6e95-463b-a4a6-82544f1027fb}");

 145:      LinkIssueIDNoMenu = new Guid("{03f89857-27c9-4b58-aaab-620647deda9b}");

 146:      V3Comments = new Guid("{6df9bd52-550e-4a30-bc31-a4366832a87e}");

 147:      Name = new Guid("{bfc6f32c-668c-43c4-a903-847cca2f9b3c}");

 148:      EMail = new Guid("{fce16b4c-fe53-4793-aaab-b4892e736d15}");

 149:      Notes = new Guid("{e241f186-9b94-415c-9f66-255ce7f86235}");

 150:      IsSiteAdmin = new Guid("{9ba260b2-85a1-4a32-ad7a-63eaceffe6b4}");

 151:      Deleted = new Guid("{4ed6dfdf-86a8-4894-bd1b-4fa28042be53}");

 152:      Picture = new Guid("{d9339777-b964-489a-bf09-2ac3c3fe5f0d}");

 153:      Department = new Guid("{05fdf852-4b64-4096-9b2b-d2a62a86bc59}");

 154:      SipAddress = new Guid("{829c275d-8744-4d9b-a42f-53f53eb60559}");

 155:      IsActive = new Guid("{af5036db-36f4-46c8-bde7-a677bd0ef280}");

 156:      TrimmedBody = new Guid("{6d0f8993-5050-41f3-be6c-18902d282357}");

 157:      DiscussionLastUpdated = new Guid("{59956c56-30dd-4cb1-bf12-ef693b42679c}");

 158:      MessageId = new Guid("{2ef29342-2f5f-4052-90d3-8192e0705e51}");

 159:      ThreadTopic = new Guid("{769b99d9-d361-4948-b687-f01332391629}");

 160:      ThreadIndex = new Guid("{cef73bf1-edf6-4dd9-9098-a07d83984700}");

 161:      EmailReferences = new Guid("{124527a9-fc10-48ff-8d44-960a7db405f8}");

 162:      RelevantMessages = new Guid("{9161f6cb-a8e6-47b8-9d24-89415de691f7}");

 163:      ParentFolderId = new Guid("{a9ec25bf-5a22-4658-bd19-484e52efbe1a}");

 164:      ShortestThreadIndex = new Guid("{4753e73b-5b5d-4bbc-8e09-c9683b0d40a7}");

 165:      ShortestThreadIndexId = new Guid("{2bec4782-695f-406d-9e50-f1d39a2b8eb6}");

 166:      ShortestThreadIndexIdLookup = new Guid("{8ffccefe-998b-4896-a6df-32d566f69141}");

 167:      DiscussionTitleLookup = new Guid("{f0218b98-d0d6-4fc1-b15b-aabeb89f32a9}");

 168:      DiscussionTitle = new Guid("{c5abfdc7-3435-4183-9207-3d1146895cf8}");

 169:      LinkDiscussionTitleNoMenu = new Guid("{3ac9353f-613f-42bd-98e1-530e9fd1cbf6}");

 170:      LinkDiscussionTitle = new Guid("{46045bc4-283a-4826-b3dd-7a78d790b266}");

 171:      LinkDiscussionTitle2 = new Guid("{b4e31c47-f962-4f9f-9132-eb555a1a026c}");

 172:      ReplyNoGif = new Guid("{87cda0e2-fc57-4eec-a696-b0de2f61f361}");

 173:      ThreadingControls = new Guid("{c55a4674-640b-4bae-8738-ce0439e6f6d4}");

 174:      IndentLevel = new Guid("{68227570-72dd-4816-b6b6-4b81ff99a393}");

 175:      Indentation = new Guid("{26c4f53e-733a-4202-814b-377492b6c841}");

 176:      StatusBar = new Guid("{f90bce56-87dc-4d73-bfcb-03fcaf670500}");

 177:      BodyAndMore = new Guid("{c7e9537e-bde4-4923-a100-adbd9e0a0a0d}");

 178:      MessageBody = new Guid("{fbba993f-afee-4e00-b9be-36bc660dcdd1}");

 179:      BodyWasExpanded = new Guid("{af82aa75-3039-4573-84a8-73ffdfd22733}");

 180:      QuotedTextWasExpanded = new Guid("{e393d344-2e8c-425b-a8c3-89ac3144c9a2}");

 181:      CorrectBodyToShow = new Guid("{b0204f69-2253-43d2-99ad-c0df00031b66}");

 182:      FullBody = new Guid("{9c4be348-663a-4172-a38a-9714b2634c17}");

 183:      LimitedBody = new Guid("{61b97279-cbc0-4aa9-a362-f1ff249c1706}");

 184:      MoreLink = new Guid("{fb6c2494-1b14-49b0-a7ca-0506d6e85a62}");

 185:      LessLink = new Guid("{076193bd-865b-4de7-9633-1f12069a6fff}");

 186:      ToggleQuotedText = new Guid("{e451420d-4e62-43e3-af83-010d36e353a2}");

 187:      Threading = new Guid("{58ca6516-51cd-41fb-a908-dd2a4aeea8bc}");

 188:      PersonImage = new Guid("{adfe65ee-74bb-4771-bec5-d691d9a6a14e}");

 189:      PersonViewMinimal = new Guid("{b4ab471e-0262-462a-8b3f-c1dfc9e2d5fd}");

 190:      IsRootPost = new Guid("{bd2216c1-a2f3-48c0-b21c-dc297d0cc658}");

 191:      Combine = new Guid("{e52012a0-51eb-4c0c-8dfb-9b8a0ebedcb6}");

 192:      RepairDocument = new Guid("{5d36727b-bcb2-47d2-a231-1f0bc63b7439}");

 193:      ShowRepairView = new Guid("{11851948-b05e-41be-9d9f-bc3bf55d1de3}");

 194:      ShowCombineView = new Guid("{086f2b30-460c-4251-b75a-da88a5b205c1}");

 195:      TemplateUrl = new Guid("{4b1bf6c6-4f39-45ac-acd5-16fe7a214e5e}");

 196:      xd_ProgID = new Guid("{cd1ecb9f-dd4e-4f29-ab9e-e9ff40048d64}");

 197:      xd_Signature = new Guid("{fbf29b2d-cae5-49aa-8e0a-29955b540122}");

 198:      WorkflowInstance = new Guid("{de21c770-a12b-4f88-af4b-aeebd897c8c2}");

 199:      WorkflowAssociation = new Guid("{8d426880-8d96-459b-ae48-e8b3836d8b9d}");

 200:      WorkflowTemplate = new Guid("{bfb1589e-2016-4b98-ae62-e91979c3224f}");

 201:      List = new Guid("{f44e428b-61c8-4100-a911-a3a635f43bb5}");

 202:      Item = new Guid("{92b8e9d0-a11b-418f-bf1c-c44aaa73075d}");

 203:      User = new Guid("{5928ff1f-daa1-406c-b4a9-190485a448cb}");

 204:      Occurred = new Guid("{5602dc33-a60a-4dec-bd23-d18dfcef861d}");

 205:      Event = new Guid("{20a1a5b1-fddf-4420-ac68-9701490e09af}");

 206:      Group = new Guid("{c86a2f7f-7680-4a0b-8907-39c4f4855a35}");

 207:      Outcome = new Guid("{dcde7b1f-918b-4ed5-819f-9798f8abac37}");

 208:      DLC_Duration = new Guid("{80289bac-fd36-4848-b67a-bc8b5b621ec2}");

 209:      DLC_Description = new Guid("{2fd53156-ff9d-4cc3-b0ac-fe8a7bc82283}");

 210:      Data = new Guid("{38269294-165e-448a-a6b9-f0e09688f3f9}");

 211:      Purpose = new Guid("{8ee23f39-e2d1-4b46-8945-42386b24829d}");

 212:      ConnectionType = new Guid("{939dfb93-3107-44c6-a98f-dd88dca3f8cf}");

 213:      FileType = new Guid("{c53a03f3-f930-4ef2-b166-e0f2210c13c0}");

 214:      ImageSize = new Guid("{922551b8-c7e0-46a6-b7e3-3cf02917f68a}");

 215:      ImageWidth = new Guid("{7e68a0f9-af76-404c-9613-6f82bc6dc28c}");

 216:      ImageHeight = new Guid("{1944c034-d61b-42af-aa84-647f2e74ca70}");

 217:      ImageCreateDate = new Guid("{a5d2f824-bc53-422e-87fd-765939d863a5}");

 218:      EncodedAbsThumbnailUrl = new Guid("{b9e6f3ae-5632-4b13-b636-9d1a2bd67120}");

 219:      EncodedAbsWebImgUrl = new Guid("{a1ca0063-779f-49f9-999c-a4a2e3645b07}");

 220:      SelectedFlag = new Guid("{7ebf72ca-a307-4c18-9e5b-9d89e1dae74f}");

 221:      NameOrTitle = new Guid("{76d1cc87-56de-432c-8a2a-16e5ba5331b3}");

 222:      RequiredField = new Guid("{de1baa4b-2117-473b-aa0c-4d824034142d}");

 223:      Keywords = new Guid("{b66e9b50-a28e-469b-b1a0-af0e45486874}");

 224:      Thumbnail = new Guid("{ac7bb138-02dc-40eb-b07a-84c15575b6e9}");

 225:      Preview = new Guid("{bd716b26-546d-43f2-b229-62699581fa9f}");

 226:      DecisionStatus = new Guid("{ac3a1092-34ad-42b2-8d47-a79d01d9f516}");

 227:      AttendeeStatus = new Guid("{3329f39d-70ed-4858-b8c8-c5237634bf08}");

 228:      fAllDayEvent = new Guid("{7d95d1f4-f5fd-4a70-90cd-b35abc9b5bc8}");

 229:      Language = new Guid("{d81529e8-384c-4ca6-9c43-c86a256e6a44}");

 230:      SurveyTitle = new Guid("{e6f528fb-2e22-483d-9c80-f2536acdc6de}");

 231:      WikiField = new Guid("{c33527b4-d920-4587-b791-45024d00068a}");

 232:      PublishedDate = new Guid("{b1b53d80-23d6-e31b-b235-3a286b9f10ea}");

 233:      PostCategory = new Guid("{38bea83b-350a-1a6e-f34a-93a6af31338b}");

 234:      BaseAssociationGuid = new Guid("{e9359d15-261b-48f6-a302-01419a68d4de}");

 235:      XomlUrl = new Guid("{566da236-762b-4a76-ad1f-b08b3c703fce}");

 236:      RulesUrl = new Guid("{ad97fbac-70af-4860-a078-5ee704946f93}");

 237:      Categories = new Guid("{9ebcd900-9d05-46c8-8f4d-e46e87328844}");

 238:      ol_EventAddress = new Guid("{493896da-0a4f-46ec-a68e-9cfd1a5fc19b}");

 239:      DateCompleted = new Guid("{24bfa3c2-e6a0-4651-80e9-3db44bf52147}");

 240:      TotalWork = new Guid("{f3c4a259-19a2-44b8-ab3d-e9145d07d538}");

 241:      ActualWork = new Guid("{b0b3407e-1c33-40ed-a37c-2430b7a5d081}");

 242:      TaskCompanies = new Guid("{3914f98e-6d99-4218-9ba3-af7370b9e7bc}");

 243:      Mileage = new Guid("{3126c2f1-063e-4892-828f-0696ec6e105f}");

 244:      BillingInformation = new Guid("{4f03f66b-fb1e-4ed2-ab8e-f6ed3fe14844}");

 245:      Role = new Guid("{eeaeaaf1-4110-465b-905e-df1073a7e0e6}");

 246:      MiddleName = new Guid("{418c8d29-6f2e-44c3-8955-2cd7ec3e2151}");

 247:      Suffix = new Guid("{d886eba3-d018-4103-a322-d5780127ef8a}");

 248:      AssistantNumber = new Guid("{f55de332-074e-4e71-a71a-b90abfad51ae}");

 249:      Business2Number = new Guid("{6547d03a-76d3-4d74-9d34-f51b837c0879}");

 250:      CallbackNumber = new Guid("{344e9657-b17f-4344-a834-ff7c056bcc5e}");

 251:      CarNumber = new Guid("{92a011a9-fd1b-42e0-b6fa-afcfee1928fa}");

 252:      CompanyNumber = new Guid("{27cb1283-bda2-4ae8-bcff-71725b674dbb}");

 253:      Home2Number = new Guid("{8c5a385d-2fff-42da-a4c5-f6a904f2e491}");

 254:      HomeFaxNumber = new Guid("{c189a857-e6b0-488f-83a0-f4ee0a3ad01e}");

 255:      ISDNNumber = new Guid("{a579062a-6c1d-4ad3-9d5e-035f9f2c1882}");

 256:      OtherNumber = new Guid("{96e02495-f428-48bc-9f13-06d98ba58c34}");

 257:      OtherFaxNumber = new Guid("{aad15eb6-d7fd-47b8-abd4-adc0fe33a6ba}");

 258:      PagerNumber = new Guid("{f79bf074-daf7-4c06-a314-15b287fdf4c9}");

 259:      PrimaryNumber = new Guid("{d69bcc0e-57c3-4f3b-bbc5-b090edf21f0f}");

 260:      RadioNumber = new Guid("{d1aede4f-1352-48d9-81e2-b10097c359c1}");

 261:      TelexNumber = new Guid("{e7be7f3c-c436-481d-8865-669e5146f53c}");

 262:      TTYTDDNumber = new Guid("{f54697f1-0357-4c5a-a711-0cb654bc73e4}");

 263:      IMAddress = new Guid("{4cbd96f7-09c6-4b5e-ad42-1cbe123de63a}");

 264:      HomeAddressStreet = new Guid("{8c66e340-0985-4d68-af03-3050ece4862b}");

 265:      HomeAddressCity = new Guid("{5aeabc56-57c6-4861-bc12-bd72c30fc6bd}");

 266:      HomeAddressStateOrProvince = new Guid("{f5b36006-69b0-418c-bd4a-f25ca7e096bb}");

 267:      HomeAddressPostalCode = new Guid("{c0e4b4c6-6245-4846-8561-b8c6c01fefc1}");

 268:      HomeAddressCountry = new Guid("{897ecfd7-4293-4782-b463-bd68440a5fed}");

 269:      OtherAddressStreet = new Guid("{dff5dfc2-e2b7-4a19-bde7-76dabc90a3d2}");

 270:      OtherAddressCity = new Guid("{90fa9a8e-aac0-4828-9cb4-78f98416affa}");

 271:      OtherAddressStateOrProvince = new Guid("{f45883bc-8733-4b77-ab5d-43613986aa12}");

 272:      OtherAddressPostalCode = new Guid("{0557c3f8-60c4-4dfb-b5ba-bf3c4e4386b1}");

 273:      OtherAddressCountry = new Guid("{3c0e9e00-8fcc-479f-9d8d-3447cda34c5b}");

 274:      Email2 = new Guid("{e232d6c8-9f49-4be2-bb28-b90570bcf167}");

 275:      Email3 = new Guid("{8bd27dbd-29a0-4ccd-bcb4-03fe70c538b1}");

 276:      ol_Department = new Guid("{c814b2cf-84c6-4f56-b4a4-c766938a97c5}");

 277:      Office = new Guid("{26169ab2-4bd2-4870-b077-10f49c8a5822}");

 278:      Profession = new Guid("{f0753a13-44b1-4269-82af-5c34c57b0c67}");

 279:      ManagersName = new Guid("{ba934502-d68d-4960-a54b-51e15fef5fd3}");

 280:      AssistantsName = new Guid("{2aea194d-e399-4f05-95af-94f87b1f2687}");

 281:      Nickname = new Guid("{6b0a2cd7-a7f9-41ca-b932-f3bebb603793}");

 282:      SpouseName = new Guid("{f590b1de-8e28-4c17-91bc-bf4096024b7e}");

 283:      Birthday = new Guid("{c4c7d925-bc1b-4f37-826d-ac49b4fb1bc1}");

 284:      Anniversary = new Guid("{9d76802c-13c4-484a-9872-d7f9641c4672}");

 285:      Gender = new Guid("{23550288-91b5-4e7f-81f9-1a92661c4838}");

 286:      Initials = new Guid("{7a282f86-69d9-40ff-ae1c-c746cf21256b}");

 287:      Hobbies = new Guid("{203fa378-6eb8-4ed9-a4f9-221a4c1fbf46}");

 288:      ChildrensNames = new Guid("{6440b402-8ec5-4d7a-83f4-afccb556b5cc}");

 289:      UserField1 = new Guid("{566656f5-17b3-4291-98a5-5074aadf77b3}");

 290:      UserField2 = new Guid("{182d1b9e-1718-4e11-b279-38f7ed0a20d6}");

 291:      UserField3 = new Guid("{a03eb53e-f123-4af9-9355-f92bd75c00b3}");

 292:      UserField4 = new Guid("{adefa4ca-14c3-4694-b531-f51b706efe9d}");

 293:      GovernmentIDNumber = new Guid("{da31d3c9-f9da-4c35-88d4-60aafa4c3f19}");

 294:      ComputerNetworkName = new Guid("{86a78395-c8ad-429e-abff-be09417b523e}");

 295:      ReferredBy = new Guid("{9b4cc5a9-1119-43e4-b2a8-412c4031f92b}");

 296:      OrganizationalIDNumber = new Guid("{0850ae15-19dd-431f-9c2f-3aff3ae292ce}");

 297:      CustomerID = new Guid("{81368791-7cbc-4230-981a-a7669ade9801}");

 298:      PersonalWebsite = new Guid("{5aa071d9-3254-40fb-82df-5cedeff0c41e}");

 299:      FTPSite = new Guid("{d733736e-4204-4812-9565-191567b27e33}");

 300:      ParentVersionString = new Guid("{bc1a8efb-0f4c-49f8-a38f-7fe22af3d3e0}");

 301:      ParentLeafName = new Guid("{774eab3a-855f-4a34-99da-69dc21043bec}");

 302:      _DCDateCreated = new Guid("{9f8b4ee0-84b7-42c6-a094-5cbde2115eb9}");

 303:      _Identifier = new Guid("{3c76805f-ad45-483a-9c85-7ac24506ce1a}");

 304:      _Version = new Guid("{78be84b9-d70c-447b-8275-8dcd768b6f92}");

 305:      _Revision = new Guid("{16b4ab96-0ce5-4c82-a836-f3117e8996ff}");

 306:      _DCDateModified = new Guid("{810dbd02-bbf5-4c67-b1ce-5ad7c5a512b2}");

 307:      _LastPrinted = new Guid("{b835f7c6-88a0-45d5-80c9-7ab4b2888b2b}");

 308:      _Contributor = new Guid("{370b7779-0344-4b9f-8f2d-dc1c62eae801}");

 309:      _Coverage = new Guid("{3b1d59c0-26b1-4de6-abbd-3edb4e2c6eca}");

 310:      _Format = new Guid("{36111fdd-2c65-41ac-b7ef-48b9b8da4526}");

 311:      _Publisher = new Guid("{2eedd0ae-4281-4b77-99be-68f8b3ad8a7a}");

 312:      _Relation = new Guid("{5e75c854-6e9d-405d-b6c1-f8725bae5822}");

 313:      _RightsManagement = new Guid("{ada3f0cb-6f95-4588-bb08-d97cc0623522}");

 314:      _Source = new Guid("{b0a3c1db-faf1-48f0-9be1-47d2fc8cb5d6}");

 315:      _ResourceType = new Guid("{edecec70-f6e2-4c3c-a4c7-f61a515dfaa9}");

 316:      _EditMenuTableStart2 = new Guid("{1344423c-c7f9-4134-88e4-ad842e2d723c}");

 317:      MyEditor = new Guid("{078b9dba-eb8c-4ec5-bfdd-8d220a3fcc5d}");

 318:      ThumbnailExists = new Guid("{1f43cd21-53c5-44c5-8675-b8bb86083244}");

 319:      AlternateThumbnailUrl = new Guid("{f39d44af-d3f3-4ae6-b43f-ac7330b5e9bd}");

 320:      PreviewExists = new Guid("{3ca8efcd-96e8-414f-ba90-4c8c4a8bfef8}");

 321:      IconOverlay = new Guid("{b77cdbcf-5dce-4937-85a7-9fc202705c91}");

 322:      UIVersion = new Guid("{8e334549-c2bd-4110-9f61-672971be6504}");

 323:      SortBehavior = new Guid("{423874f8-c300-4bfb-b7a1-42e2159e3b19}");

 324:      FolderChildCount = new Guid("{960ff01f-2b6d-4f1b-9c3f-e19ad8927341}");

 325:      ItemChildCount = new Guid("{b824e17e-a1b3-426e-aecf-f0184d900485}");

 326:      EmailHeaders = new Guid("{e6985df4-cf66-4313-bcda-d89744d3b02f}");

 327:      Predecessors = new Guid("{c3a92d97-2b77-4a25-9698-3ab54874bc6f}");

 328:      MobilePhone = new Guid("{bf03d3ca-aa6e-4845-809a-b4378b37ce08}");

 329:      wic_System_Copyright = new Guid("{f08ab41d-9a03-49ae-9413-6cd284a15625}");

 330:      PreviewOnForm = new Guid("{8c0d0aac-9b76-4951-927a-2490abe13c0b}");

 331:      ThumbnailOnForm = new Guid("{9941082a-4160-46a1-a5b2-03394bfdf7ee}");

 332:      NoCodeVisibility = new Guid("{a05a8639-088a-4aea-b8a9-afc888971c81}");

 333:      AssociatedListId = new Guid("{b75067a2-e23b-499f-aa07-4ceb6c79e0b3}");

 334:      RestrictContentTypeId = new Guid("{8b02a33c-accd-4b73-bcae-6932c7aab812}");

 335:      WorkflowDisplayName = new Guid("{5263cd09-a770-4549-b012-d9f3df3d8df6}");

 336:      ParticipantsPicker = new Guid("{8137f7ad-9170-4c1d-a17b-4ca7f557bc88}");

 337:      Participants = new Guid("{453c2d71-c41e-46bc-97c1-a5a9535053a3}");

 338:      Facilities = new Guid("{a4e7b3e1-1b0a-4ffa-8426-c94d4cb8cc57}");

 339:      FreeBusy = new Guid("{393003f9-6ccb-4ea9-9623-704aa4748dec}");

 340:      Overbook = new Guid("{d8cd5bcf-3768-4d6c-a8aa-fefa3c793d8d}");

 341:      GbwLocation = new Guid("{afaa4198-9797-4e45-9825-8f7e7b0f5dd5}");

 342:      GbwCategory = new Guid("{7fc04acf-6b4f-418c-8dc5-ecfb0085bb51}");

 343:      WhatsNew = new Guid("{cf68a174-123b-413e-9ec1-b43e3a3175d7}");

 344:      DueDate = new Guid("{c1e86ea6-7603-493c-ab5d-db4bbfe8f96a}");

 345:      Confidential = new Guid("{9b0e6471-c5c5-42ef-9ade-63170bf28819}");

 346:      AllowEditing = new Guid("{7266b59c-030b-4ca3-bc09-bb8e76ad969b}");

 347:      V4SendTo = new Guid("{e0f298a5-7e3e-4895-9ff8-90d88ec4526d}");

 348:      Confirmations = new Guid("{ef7465d3-5d54-487b-b081-ade80acae88e}");

 349:      V4CallTo = new Guid("{7111aa1b-e7ae-4b69-acaf-db669b76e03a}");

 350:      ConfirmedTo = new Guid("{1b89212c-1c67-487a-8c14-4d30bf4ef223}");

 351:      CallBack = new Guid("{274b7e21-284a-4c49-bec6-f1f2cb6fc344}");

 352:      Detail = new Guid("{6529a881-d745-4117-a552-3dcc7110e9b8}");

 353:      CallTime = new Guid("{63fc6806-db53-4d0d-b18b-eaf90e96ddf5}");

 354:      Resolved = new Guid("{a6fd2bb9-c701-4168-99cc-242e42f7671a}");

 355:      ResolvedBy = new Guid("{b4fa187b-eb65-478e-8bc6-93b0da320f03}");

 356:      ResolvedDate = new Guid("{c4995c71-4c5c-4e9f-afc1-a9033f2bfde5}");

 357:      Description = new Guid("{3f155110-a6a2-4d70-926c-94648101f0e8}");

 358:      HolidayDate = new Guid("{335e22c3-b8a4-4234-9790-7a03eeb7b0d4}");

 359:      V4HolidayDate = new Guid("{492b1ac0-c594-4013-a2b6-ea70f5a8a506}");

 360:      IsNonWorkingDay = new Guid("{baf7091c-01fb-4831-a975-08254f87f234}");

 361:      UserName = new Guid("{211a8cfc-93b7-4173-9254-0bfe2d1643da}");

 362:      Date = new Guid("{2139e5cc-6c75-4a65-b84c-00fe93027db3}");

 363:      DayOfWeek = new Guid("{61fc45dd-b33d-4679-8646-be9e6584fadd}");

 364:      Start = new Guid("{05e6336c-d22e-478e-9414-366762883b3f}");

 365:      End = new Guid("{04b29608-b1e8-4ff9-90d5-5328096dd5ac}");

 366:      In = new Guid("{ee394fd4-4c11-4d8e-baff-83270c1921aa}");

 367:      Out = new Guid("{fde05b9b-52bf-43dc-9b96-bb35fa7aa05d}");

 368:      Break = new Guid("{9b12fb06-254e-43b3-bfc8-8eea422ebc9f}");

 369:      ScheduledWork = new Guid("{3bdf7bd3-f229-419e-8e12-3dfecb49ed38}");

 370:      Overtime = new Guid("{35d79e8b-3701-4659-9c27-c070ed3c2bfa}");

 371:      NightWork = new Guid("{aaa68c08-6276-4337-9bce-b9cd852c7328}");

 372:      HolidayWork = new Guid("{b5a7350f-2716-46ca-9c42-66bb39d042ec}");

 373:      HolidayNightWork = new Guid("{dc9100ec-251d-4e81-a6cb-d967a065ba24}");

 374:      Late = new Guid("{df7f27a4-d87b-4a97-947b-13d1d4f7e6de}");

 375:      LeaveEarly = new Guid("{a2a86efe-c28e-4dde-ab56-0afa31664bbc}");

 376:      Oof = new Guid("{63c1c608-df6f-4cfa-bcab-fdbf9c223e31}");

 377:      Vacation = new Guid("{dfd58778-bf8e-4769-8265-09ac03159eed}");

 378:      NumberOfVacation = new Guid("{44e16d52-da1b-4e72-8bdb-89a3b77ec8b0}");

 379:      ShortComment = new Guid("{691b9a4b-512e-4341-b3f1-68914130d5b2}");

 380:      ListType = new Guid("{81dde544-1e25-4765-b5fd-ba613198d850}");

 381:      Content = new Guid("{7650d41a-fa26-4c72-a641-af4e93dc7053}");

 382:      MobileContent = new Guid("{53a2a512-d395-4852-8714-d4c27e7585f3}");

 383:      Whereabout = new Guid("{e2a07293-596a-4c59-9089-5c4f9339077f}");

 384:      From = new Guid("{4cd541b9-c8ee-468f-bee6-33f3b9baa722}");

 385:      GoFromHome = new Guid("{6570d35e-7f0a-4123-93c9-f53ffa5810d3}");

 386:      Until = new Guid("{fe3344ab-b468-471f-8fa5-9b506c7d1557}");

 387:      GoingHome = new Guid("{2ead592e-f05c-41a2-9817-e06dac25bc19}");

 388:      ContactInfo = new Guid("{e1a85174-b8d0-4962-9ce6-758f8b612725}");

 389:      IMEDisplay = new Guid("{90244050-709c-4837-9316-93863fbd3da6}");

 390:      IMEComment1 = new Guid("{d2433b20-3f02-4432-817d-369f104a2dcd}");

 391:      IMEComment2 = new Guid("{e2c93917-cf32-4b29-be5c-d71f1bac7714}");

 392:      IMEComment3 = new Guid("{7c52f61a-e1e0-4341-9e2f-9b36cddfdd7c}");

 393:      IMEUrl = new Guid("{84b0fe85-6b16-40c3-8507-e56c5bbc482e}");

 394:      IMEPos = new Guid("{f3cdbcfd-f456-45f4-9000-b6f34bb95d84}");

 395:      HealthRuleService = new Guid("{2d6e61d0-be31-460c-ab8b-77d8b369f517}");

 396:      HealthRuleType = new Guid("{7dd0a092-8704-4ed2-8253-ac309150ac59}");

 397:      HealthRuleScope = new Guid("{e59f08c9-fa34-4f94-a00a-f6458b1d3c56}");

 398:      HealthRuleSchedule = new Guid("{26761ba3-729d-4bfc-9658-77b55e01f8d5}");

 399:      HealthReportServers = new Guid("{84a318aa-9035-4529-98b9-e08bb20a5da0}");

 400:      HealthReportServices = new Guid("{e2b0b450-6795-4b86-86b7-3c21ab1797fb}");

 401:      HealthReportCategory = new Guid("{a63505f2-f42c-4d94-b03b-78ba2c73d40e}");

 402:      HealthReportExplanation = new Guid("{b4c8faec-5d60-49ee-a5fb-6165f5c3e6a9}");

 403:      HealthReportRemedy = new Guid("{8aa22caa-8000-44c9-b343-a7705bbed863}");

 404:      HealthRuleReportLink = new Guid("{cf4ff575-f1f5-4c5b-b595-54bbcccd0c62}");

 405:      HealthReportSeverityIcon = new Guid("{89efcbd9-9796-41f0-b569-65325f1882dc}");

 406:      HealthReportSeverity = new Guid("{505423c5-f085-48b9-9432-12073d643ba5}");

 407:      HealthRuleAutoRepairEnabled = new Guid("{1e41a55e-ef71-4740-b65a-d11e24c1d00d}");

 408:      HealthRuleCheckEnabled = new Guid("{7b2b1712-a73d-4ad7-a9d0-662f0291713d}");

 409:      HealthRuleVersion = new Guid("{6b6b1455-09ee-43b7-beea-4dc97456de2f}");

 410:      XSLStyleCategory = new Guid("{dfffbbfb-0cc3-4ce7-8cb3-a2958fb726a1}");

 411:      XSLStyleWPType = new Guid("{4499086f-9ac1-41df-86c3-d8c1f8fc769a}");

 412:      XSLStyleIconUrl = new Guid("{3dfb3e11-9ccd-4404-b44a-a71f6399ea56}");

 413:      XSLStyleBaseView = new Guid("{4630e6ac-e543-4667-935a-2cc665e9b755}");

 414:      XSLStyleRequiredFields = new Guid("{acb9088a-a171-4b99-aa7a-10388586bc74}");

 415:      s_dict = null;

 416:  }

By using SharePoint Manager 2010, I could get the ID of the Description column for the History List :

   1:  2fd53156-ff9d-4cc3-b0ac-fe8a7bc82283

This ID is the one at line 209 !

End of the story.
I lost this battle against the Workflow History List  !