ON/OFF Button lighting in the sky Roblox studio (Script)

local clickDetector = script.Parent:WaitForChild("ClickDetector")
skyState = true
script.Parent.ClickDetector.MouseClick:Connect(function()
if(skyState == true) then
game.Lighting.Brightness = 0
skyState = false
elseif(skyState == false and clickDetector.MouseClick) then
game.Lighting.Brightness = 3
skyState = true
end
end)
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