Why doesn't my NPC's animation change?

On my game, the NPC has an animation that loops and I want to change that animation to a different one. The problem: He just does the same animation and it doesn't change. Script to change animation (Normal script):

script.Parent.MouseButton1Click:Connect(function()
	
local animation = workspace.Gino.Gino.Script6.Animation
local humanoid = workspace.Gino:WaitForChild('Humanoid')
	local dance = humanoid:LoadAnimation(animation)
	
	dance:Play()
	
	workspace.Gino.Gino.Script.Animation.AnimationId = "http://www.roblox.com/asset/?id=5184007241"
	
end)

I even did "rbxassetid://", but it doesn't work. Thank you!