Help me run my animation in my NPC?

wait(1)
if script.Parent.Humanoid.Health < 30 then 

local Stagger = Instance.new("Animation")
	Stagger.AnimationId = "http://www.roblox.com/Asset?ID=227773697"
local animController = script.Parent.AnimationController
local animTrack = animController:LoadAnimation(Stagger)
animTrack:Play()

end

This script is in an NPC and the animation is meant to play when its health is below 30 however it isnt playing. Ive followed the animation tutorials on wiki however there has been no change. I have a HumanoidRootpart in my NPC and an AnimationController. As you can see Im using ROBLOX Animator.

Please Help.