Having troubles finding the Error i made within this script and doesn't print wow, Any help?

local UIS = game:GetService("UserInputService")
local p = game.Players.LocalPlayer
chain = 0

--//Animations
local combat1 = Instance.new("Animation")
combat1.AnimationId = "http://www.roblox.com/Asset?ID=1530711495"
local animTrack1 = p.Character.Humanoid:LoadAnimation(combat1)
--


local function Combat(Input, gameProcessedEvent)
    local KeyCode = Input.KeyCode

    if KeyCode == Enum.UserInputType.MouseButton1 and script.canAttack == true and chain == 0 then
        print("wow")
        animTrack1:Play()
    end
end

UIS.InputBegan:Connect(Combat)