catch the close event of a pop-up dialog

hi all Experts,

i have a questions.

I have a FPM application and there is a main page in it.

In the mainpage there is a LISTUIBB, i added a button here to pop-up a dialog box by API:

lo_fpm->open_dialog_box(

      EXPORTING

        iv_dialog_box_id         = 'ADP_S0_SEARCH'    " FPM: ID of the dailog window

    ).

in the dialog box, there is a search UIBB and a list uibb, the list uibb will display the searching result from sarch uibb.

now my question is, when i close the dialogbox, i want to catch the close event from the LIST UIBB which has called it. (not the list uibb in the dialogbox, in the uibb which in the dialogbox, the close event can be catched. )

I do not know how to catch the close event from the mainpage, please give me some hint.

Thanks.

Hao