FPM_LIST_UIBB_ATS button dont work.

Hi

I'm working with NWBC

And i include a new tab in screen with a FPM_COMPOSITE_UIBB AND  inside it i put 2 FPM_LIST_UIBB_ATS

now the first FPM_LIST_UIBB_ATS  works but the second dont allow insert data .

Somebody know why and how correct it.

OBS:I'm a beginner in this FPM.

Thanks.