hi, i'm new at bitsy and a novice in coding. great game, but how do you get the avatar to walk up the 'slope'? as in, how does the avatar walk up a wall tile? i tried to have a look at the source code, but can't figure it out. i thought it was the gravity hack at first, but that doesn't seem to be it? don't know if you still read these comments, but any help/explanation would be much appreciated. thanks.