Calling Subscreens

Hi All,

I am trying to call a subscreen conditionally. Since 'Call Subscreen' is a Screen command, I cannot use it within the PBO module. But I cannot put a IF or CASE statement in the screen flow logic. I am sure there is a way to solve this problem but doesn't seem to recall now.

Any help is greatly appreciated from fellow ABAPers.

Thanks,

Chandrika