I've been making a game but I can't figure out timers which are crucial to development. I've tried all I can, but the most I've gotten is an error message saying that the callback must be a function. I don't understand this as I did put a function for callback. My code was pd.timer.new( 5000, Act(1) ). I DID have the update timer piece of code but I just don't know how to work the timer. Can somebody help me, please?