Why does this global value not change an IntValue?

So i have 2 pieces of code in my hands:

--[]--
	
game.Players.PlayerAdded:connect(function(player)
     local leaderstats = Instance.new("Model")
     leaderstats.Name = "leaderstats"
     leaderstats.Parent = player
 
     local Stage = Instance.new("IntValue") --We create a new IntValue
     Stage.Name = "Stage No." --this is the name you want the leader-stat to be when it shows up in-game.
     Stage.Value = 0 --this is the value of money the new player starts out with. To change this, you can add some more code (shown later)
     Stage.Parent = leaderstats -- Set the money object as a child of the leaderstats object.
 end)


--[]--
while true do
	game.Workspace.GameValues.StageNo.Value = _G.StageNo
	wait(0.1)
end
--[]--
Assets = {755156652,327081386,833322858}
 
for _, asset in ipairs(Assets) do
     game:GetService("ContentProvider"):Preload("http://www.roblox.com/asset/?id=" .. asset)
end

--[]--

and:

_G.StageNo = 0

while true do 
    script.Parent.Text = _G.StageNo
	print(_G.StageNo)
    wait(0.1)
end

--[[My tree:
 	game
		Workspace
			GameValues
				StageNo (an IntValue)
		ServerScriptService
			Code1
		StarterGui
			ScreenGui
				Frame
					TextBox
						Code2
]]

Problem: In Code 1, right after the function, I place a while true do statement wherein I try and assign a Global variable to the IntValue, but when the Global variable changes, the leaderstats of StageNo do not. Why?

The issue may of been your loops. Because when you have a loop that is outside of a event it yields the rest of the thread until it stops. So wrapping the loop in the thread with a coroutine.wrap() function would fix it and allow the rest of the code to run.

coroutine.wrap(function()
while true do
    game.Workspace.GameValues.StageNo.Value = _G.StageNo
    wait(0.1)
end
end)() -- For block 1

coroutine.wrap(function()
while true do 
    script.Parent.Text = _G.StageNo
    print(_G.StageNo)
    wait(0.1)
end
end)()