The stupidest script ever to be made.

[Sazaho]

Okay. So here is my script, obviously it doesn't work, because of my lack of scripting knowledge, and I was wondering what is missing.
The script is a script to change the player's layer by pressing q and e.

print("Yo, yo, yo. Whazzup mah homiiieeeess!!")

P = Player.Layer

Function Keydown (q)
P = P +1

Function Keydown (e)
P = P -1