local isOn = false

function on()
    isOn = true
    while true do
        script.Parent.Button1.BrickColor = BrickColor.new("Bright red")
        for i = 9, 20 do
            script.Parent.Door.CFrame=CFrame.new(-29.5,i,106.5)
            wait(.05)
        end
        wait(2)
        for i = 1, 11 do
            script.Parent.Door.CFrame=CFrame.new(-29.5,20-i,106.5)
            wait(.05)
            isOn = false
        end
    end
end

function off()
    isOn = false
    script.Parent.Button1.BrickColor = BrickColor.new("Bright green")
end

function onClicked()
    if isOn == true then
        off()
    else
        on()
    end
end

script.Parent.Button1.ClickDetector.MouseClick:connect(onClicked)

off()