[FE] Local script player list not working?

I have a FE game and when a player joins it adds a gui to a frame with UIListLayout. But when the function is called it does nothing.

Code:

game.Players.PlayerAdded:Connect(function(plr)
    print(" has entered")
    local temp = script.Parent.Parent.Parent.Templates.PlayerTemp:Clone()
        temp.Name = plr.Name
        temp.Text = plr.Name
        temp.Parent = script.Parent

end)

Local Script inside a frame