Ayantir i think JohnnyKing94 would know how to propagate the key get to the "main game"
Example:
my key I is keybinded with Inventory
If i click I, the OnKeyDown Handle catch that key and the inventory does not open.
So, i think he try to propagate the key given by the "function(self, key, ctrl, alt, shift, command)" to the """"Top Level Game""""
sorry JohnnyKing94, but i don't know the answer