problem with listbox in subscreen

Hi Experts,

i am new in abap..so please help me

I am facing the problem with the data populating to the List Box of a screen element.

I have a tab strip control screen 3 tabs and having 3 sub screens for each tab. The problem is I have some couple of List box screen elements for this sub screens and when I am populating the Key and Text values to this fields it is not getting displayed when I select the list instead when the PAI of the main screen is triggered it is displaying the values.

I have checked it with the F4IF_INT_VALUE REQUEST and VRMSET_VALUES but still there is no and even I have tried it placing in the POV and in PBO but still there is no luck. If I will do the same logic to the normal screen it works fine.

Please let me know if anyone knows how to handle the above scenario and let me know whether this can be possible or not.

Thanks in advance.

Regards,

Dhananjay