How do i fix my character animation problem?

I just made a script today and its not playing the animation my character.

local Player = game.Players.LocalPlayer; local AnimId = (248335946);

local URL = ("http://www.roblox.com/asset/?id=248335946"); local Anim = (URL..tostring(AnimId)); Player.CharacterAdded:connect(function(Char) local Hum = Char:WaitForChild("Humanoid"); local Track = Hum:LoadAnimation(Anim) Track:Play(); return nil; end);