How to fix my script, when I insert a new ClickDetector, it doesn't work?

Can someone help me? I'm trying to make an open and close part and when you click it, it disappears and the opened part appears. It opens and closes but it shows the click detector when it disappears, so it destroys itself when you click it in the script, and there is another script in the opened part that puts another click detector in the closed part, but the script doesn't recognize the click detector and does nothing.

The first part script:

function onClick()
    if script.Parent.Parent.patrock2.Transparency == 1 then
        script.Parent.Parent.patrock2.Transparency = 0
        script.Parent.Parent.windmill2.Transparency = 0
        script.Parent.Transparency = 1
        script.Parent.Parent.windmill1.Transparency = 1
        script.Parent.ClickDetector:Destroy()
        Instance.new("ClickDetector",script.Parent.Parent.patrock2)
    end
end
script.Parent.ClickDetector.MouseClick:connect(onClick)

--The second script below

function onClicked()
if script.Parent.Parent.patrock1.Transparency == 1 then
    script.Parent.Transparency = 1
    script.Parent.Parent.windmill2.Transparency = 1
    script.Parent.Parent.patrock1.Transparency = 0
    script.Parent.Parent.windmill1.Transparency = 0
    script.Parent.ClickDetector:Destroy()
    Instance.new("ClickDetector", script.Parent.Parent.patrock1)
end
end
script.Parent.ClickDetector.MouseClick:Connect(onClicked)