[SOLVED] I have a problem with UI script buttons, further helps?

I was making a script for my GUI buttons, I tested it both client and studio. The script works and it doesn't give errors but it won't work, (my game is in FilteringEnabled), Further helps please? Thanks as an advance!

script.Parent.MouseButton1Click:Connect(function()
	script.Parent.Parent.Parent.Frame.Visible = false --this doesn't work.
end)

I clicked it many times ASAP that it would work, but never worked. Is there any problems?

Put that script inside a local script.