Response on double click in table control (subscreen)

i know response on double click in normal screen table control... but i don't know in subscreen..

i have tab strip in normal screen. (screen no 1000).

In tab strip i have subscreen area.

i have table control in subscreen.(screen no 1001).

e.g i have EKKO details in table control.. when user double click the EBELN value i need to display the EKPO details in another screen or dialog box...