Adding "sub function" to function in ALV toolbar ?

hi there,

see screenshot: the demo program BCALV_GRID_07 has a customer button in the toolbar. It has 2 functions there -> "Überblick" and "Flüge". This is done with the add_function method in class CL_CTMENU.

So far, so good: i have the requirement of an "Sub Menu" inside the dropdown. E.g. I have function "Überblick": i want to enter sub-entries for "Überblick". There are methods like "add_menu" and "add_submenu" in the class CL_CTMENU, but i don't know how i can use them in the toolbar in ALV.

any ideas ?

br Martin