I'm trying to trigger a script that will set the "Auto Display" value to "Always" as a default on the AR_CustomerMemo.  I've tested triggering a script with a simple message box on various events like, on Table Set Default Values, Table Pre-Write, and Column Post Validate of the "MemoDesc."  None of these cause the script to fire.  I have confirmed that External Access is on and I can successfully run other scripts. 

Is it possible that the script handles just don't exist for the memo tables?  (I've also tested with the AR_InvoiceMemo table.)

And the script is simply: retStrVal = oSession.AsObject(oSession.UI).MessageBox("Starting script.")

Any suggestions are welcome.  Thanks!