PlaybackLoudness not working on servers?

I am making an audio visualiser that works with a spotlight, but for some reason, when I try it on a server, it doesn't work, but when I run it on Studio it is fine, here is the script:

script.Parent.MouseButton1Click:connect(function()
    if script.Parent.Parent.Toggle.Value == false then
        script.Parent.Parent.Toggle.Value = true
        while script.Parent.Parent.Toggle.Value == true do
            wait(0.5)
            script.Parent.Parent.Parent.Parent.VisualiserSpotlight.SpotLight.Brightness = script.Parent.Parent.Parent.Parent.SoundBoard.SurfaceGui.EnterA.Sound.PlaybackLoudness/100+0.5
            print(script.Parent.Parent.Parent.Parent.SoundBoard.SurfaceGui.EnterA.Sound.PlaybackLoudness/100+0.5)
            if script.Parent.Parent.Toggle.Value == false then
                break
            end
        end
    end
end)