Method allowVerticalDrag() in scroll list container does not seem to work

[BParh.1]

I setup a scroll list with particular template with n items. Since the items currently fit to the size of container, then I want to disable vertical drag.

I did this :

scrollList.allowVerticalDrag(false);

scrollList.invalidate()

where scrollList is an instance of class touchgfx::ScrollList

But my list can still be dragged vertically. Anything I did wrong?