My animation runner isn't working?

Basically, when a player presses p I want it to run a animation. When I press p, it doesn't run the animation. The animation is just a simple punching animaton.

local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:wait()
local Humanoid = Character:waitForChild("Humanoid")

local Animation = workspace:waitForChild("Animation")
local AnimationTrack = Humanoid:LoadAnimation(Animation)

local UIS = game:getService("UserInputService")

UIS.InputBegan:connect(function(InputObject, gameProcessedEvent)
  	if not gameProcessedEvent then
    	if InputObject.KeyCode == Enum.KeyCode.P then
			AnimationTrack:Play()
		end
	end
end)

Maybe instead of getting an animation object in the workspace why not instance a new one and set the animation id in the script itself?

local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:wait()
local Humanoid = Character:waitForChild("Humanoid")

local Animation = Instance.new("Animation") --creates new animation object
Animation.AnimationId = "rbxassetid://Your Animation" --sets the id
local AnimationTrack = Humanoid:LoadAnimation(Animation) -- loads the animation

local UIS = game:getService("UserInputService")

UIS.InputBegan:connect(function(InputObject, gameProcessedEvent)
    if not gameProcessedEvent then
        if InputObject.KeyCode == Enum.KeyCode.P then
            AnimationTrack:Play() --it should work now
        end
    end
end)

If it works please accept and thanks for asking -_^ ~KiHeros