IClassSchemaEditEx and ITable

[Anonymous User]

Original User: newbyproger

trying to run subs from here with feature class. The error "Type mismatch" is in this part:

  Dim schemaEdit As IClassSchemaEditEx
  Set schemaEdit = pTable
  schemaEdit.UnregisterGlobalIDColumn classEX.GlobalIDFieldName

pTable is ITable. It's written in example that these subs work on the selected feature class. In my case - error. What is wrong?