Why does it appear that this script is not running at all?

First of all, this may sound like a dumb question but I haven't seriously attempted to do lua in roblox in like 6 months and it's been a year since I learned anything new

I'm just trying to make a gui that displays a players health with a gui that's y dimension is 3 times larger in scale than the health of the humanoid.

None of my print statements or anything really at all is working literally there is no output and no visible change on my gui. Can someone please help me figure this out!?!?!?

health = script.Parent.background.health
stamina = script.Parent.background.stamina

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(chr)
		print('yeehaw dawgy')
		for i=1, math.huge() do
			wait()
			print(chr.Humanoid.Health)
			health.Size = health.Size - UDim2.new(0, 0, 0, chr.Humanoid.Health * 3)
			health.Position = health.Size - UDim2.new(0, 0, 0, chr.Humanoid.Health * 1.5)
			print(health.Size)
			print(health.Position)
		end
	end)
end)

I assume the problem is that you are using a script, when you should be using a local script. I think some semi-recent roblox updates changed some server/client stuff.