Still having trouble

The minigame is holding me up. I still can't figure out how to map keyboard control. The actionscript doesn't work. I will post the block of actionscript here, maybe someone reading this will be able to tell me what is wrong with it. I have spent all day trying this. It's trying my patience! :D

if (Key.isDown(Key.UP)) {
bunny._y -= 3;
}