Make form modal.

>This may be very simple but I’m on a time crunch.
>When I’m in the middle of a process and call up a form or object. The user has to pick from the list of that form.
>How do I stop the processing till the user finishes with that?
>Example
>
>

>……..code
>if not found()
>do form bla bla..
>endif
>…..code
>