The script runs perfectly and does not show any errors but the animation does not run

local WASDDown = false
local input = game:GetService("UserInputService")
local plr = game.Players.LocalPlayer

repeat wait()until plr.Character.Parent == workspace.FlightModel
repeat wait()until plr.Character.Parent == workspace

input.InputBegan:connect(function(k)
	local key = k.KeyCode
	if key == Enum.KeyCode.W  then
		WASDDown = true
		print("wasd up")
		plr.Character.Animate.fall.FallAnim.AnimationId = "http://www.roblox.com/asset/?id=2230124960"
	end
end)

input.InputEnded:connect(function(k)
	local key = k.KeyCode
	if key == Enum.KeyCode.W  then
		WASDDown = false
		print("wasd down")
		plr.Character.Animate.fall.FallAnim.AnimationId = "http://www.roblox.com/asset/?id=2269489808"
	end
end)
Anonymous