Issue with OPEN_FORM while used in When_Timer_expired Trigger

Hi All,

Am supposed to use open form method to call another form in When_Validate trigger. As i know WVT will not allow this functionality, so i've created a Timer, upon expiration of Timer i will be using Open form(When Timer expired trigger)  & it calls the required form. But my issue is while exiting from the called form, the cursor is not coming back to called form, i can see the screen (Called form) but its disabled.

Please help me to fix this issue.

Thanks,

Manju