Why won't my text button activate any code in play mode?

I've tried many things to get this to work. it works in test mode in studio and opens the rest of the GUI but when I run a server, it does nothing. This is the code I've used in the button. What have I done wrong?

script.Parent.MouseButton1Click:connect(function(Clicked) 
	script.Parent.Visible = false
	script.Parent.Parent.Size.Visible = true
	script.Parent.Parent.Jump.Visible = true
	script.Parent.Parent.Back.Visible = true
	script.Parent.Parent.Speed.Visible = true
	script.Parent.Parent.Customsize.Visible = true

end)