Need a function module to display a tree on the ALV GRID

Hi All,

I need a function module to display a tree on the ALV GRID other than RS_TREE_LIST_DISPLAY

and I also don't want to create a screen in my report.

Even classes would do provided I dont have to create a screen in my report.

Internally if the class uses its own screen I have no issues with it.

But I should not create any screen in my report

Thanks,

Siddarth