Show a player a GUI when their level changes, script not working. Why?

The script it supposed to show the player a GUI when their level changes. I'm not sure why this script doesn't work because I used a very similar script to reset the players points when their level changes and it works. I'm a new developer so I'm sure that there's something that I'm missing. Also, can someone tell me why the non-working script doesn't work and why the other script does work? (Yes, the game is FE.)

Non-working script:

game.Players.PlayerAdded:Connect(function(plr)
	
    local LSystem = plr:WaitForChild("LevelSystem")
    local PStats = plr:WaitForChild("PlayerStats")
    local level = LSystem:WaitForChild("Level")
    local points = PStats:WaitForChild("Points")

    level.Changed:Connect(function(val)
        script.Parent.Visible = true
    end)
end)

Similar script that works:

game.Players.PlayerAdded:Connect(function(plr)
	
    local LSystem = plr:WaitForChild("LevelSystem")
    local PStats = plr:WaitForChild("PlayerStats")
    local level = LSystem:WaitForChild("Level")
    local points = PStats:WaitForChild("Points")

    level.Changed:Connect(function(val)
        points.Value = 0
    end)
end)

I think your non-working script needs to be a localscript.

In the second script, it looks fine and the value changes most likely because a server (regular) script is doing it. But in the first script, you’re trying to making a GUI visible, and I’m assuming you’re using a server script for that too. Don’t use server scripts in GUI, unless you’re using a SurfaceGui.

Just replace your non-working script with a localscript. :P