Can somebody help me with this animation?

local enabled = true
mouse = Player:GetMouse()
function onKeyDown(key)
if not enabled then return end
enabled = false
	Key = key:lower()
	if key == "x" then
 
local animation = Instance.new("Animation")
	animation.AnimationId = "http://www.roblox.com/Asset?ID=220836646"

		local player = game.Players.LocalPlayer.Character


			local animTrack = player.humanoid:LoadAnimation(animation)
			animTrack:Play()


  		wait(2)
	enabled = true
end

			mouse.KeyDown:connect(onKeyDown)

I''ve been told that I havent defined the player correctly, how do I do this?