Hi Leon,
There is no direct way of giving the title of the system message box.
Maik Delly shows you the work around.
the tricky part of the workaround is when you catch the form load event, you need to make sure that the form return by the pVal.FormUID is the correct form that you want to change.
One way is to get the reference of the form, read the message in the form and compare it with your original message.
If it matches then you can almost certain that this is the form you want to alter.
Regards
Edy