Calling screen sequences from Function Modules...

Hi..

I want to create a function module which calls a screen sequence(using CALL SCREEN)...

In order to do so i have to create the screen in the function group with which the function module is attached.The PBO and PAI modules are also created in that function group.

But suppose the screen sequence has already been created and i need to call that sequence...that is a module pool program is existing which has the defined screens.

Can I call that screen sequence from my new function module that I create.

If I can do this then How to do it?

Please help me.

Ritu