Just trying to run this ...
_mMyNewRoom.setTileProperties(6, flixel.FlxObject.ANY, UpdateRoom2, null,intRange);
where _mMyNewRoom is a map, and UpdateRoom2 is a void with no parameters.
I get the error ... cannot skip Cannot skip non-nullable argument Range
which is the last parameter. Spent about two trying out different things, but I'm flummoxed alright.