I am trying to change a field value in a custom workflow but I have had trouble saving the change. I have added the workflow to the Approve event. The example in the Contour Developer Docs ( page 12 ) uses UpdateRecord() but I was not able to get the value to change until I used UpdateRecordXml()  ( which I found in this good example : http://www.nibble.be/?p=83 )

Tim's example uses both but I have found that I only need UpdateRecordXml().

Could someone explain the difference between these methods and when each one would apply?

  // update hidden field Confirmation Sent - success
  var emailSentRecordField = record.GetRecordField("Confirmation Sent");

 emailSentRecordField.Values.Clear();
 emailSentRecordField.Values.Add("Sent Successfully");

 Umbraco.Forms.Data.Storage.RecordStorage store = new RecordStorage();
        
 //   store.UpdateRecord(record,e.Form);
 store.UpdateRecordXml(record,e.Form);
 store.Dispose();