GUI status problem

Hi,

I have two screens 1000 & 2000.

I have given execute button ('STRT') in screen 1000.

Once exectued, it is going to screen 2000.

When iam coming back to 2000 to 1000 & execute again(in 1000 screen)...it is not working(not going to screen 2000).That means it is working only one time...

What i have to do to execute always...

points guarnateed

kaki