good morning claude
thanks for your help!!!

but.....this validation is inmplemented in my solution, and work fine.
The case is...in the sample in your webpage, the current action is Editing..

but when the record is new...i need trap to
Summit, Confirm
Back Explorer click
Back Explorer click
Summit, Confirm
Back Explorer click
Back Explorer click
Summit, Confirm
.
.
.
to avoid "duplicate recs"...now i am finding JavasScript code for this
case...

Thanks Claude for your help....

att
William