Why isn't a part of this is not working?

I tested this before and it worked, but now one part of the script does not work! Here is the script(problems included):

function LoadAsset()
	Box = script.Parent
	Frame = script.Parent.Parent
	if Box.Text == "Loading Assets" then -- from here
		wait(0.2)
		Box.Text = "Loading Assets."
	end
	if Box.Text == "Loading Assets." then
		wait(0.2)
		Box.Text = "Loading Assets.."
	end
	if Box.Text == "Loading Assets.." then
		wait(0.2)
		Box.Text = "Loading Assets..."
	end
	if Box.Text == "Loading Assets..." then
		wait(0.2)
		Box.Text = "Loading Assets" -- till here does not work!
	end
	function End() -- the rest works fine
		Frame.Visible = false
	end
	while wait(10)do
		End()
	end
end
while true do
	LoadAsset()
end

As you can see the broken bit is making a text loop repeating it again and again. during early testing it worked, but no it does not!

1You need the change the PlayerGui not the StarterGui...doing that will only change it on reset!

Frame = game.Players.LocalPlayer.PlayerGui -- Try that