Set Screen not allowed in sunscreens

Hi Group,

I am designing custom screen in which it is having two table scrips on main screen (for ex: 7003) , in one tab scrip it is calling sub screen(7004) with table control , in table control when user press push button ( in one column there is a push button) I need to call one more table control screen (7005) in pop up screen , for this I am using Set Screen '7005' but its throwing error "Set Screen not allowed in sunscreens" can any body suggest.