Why can't I click?

[Ice]

Qwerty made this for me.

But I can't seem to click it in game. (single-player)

[lua]
button = script.Parent --put the script inside the clickbutton
crane = button.Parent --put the clickbutton inside the crane model
bawl = crane.Wrecker --name the demolition ball "Wrecker" and put it in the crane model
link(button.Clicked, function()
bawl.Fixed = false
end)[/lua]

I'm not much of a scripter, so does anyone know what the problem is?

---

You can see what I'm trying to do here. (The construction level)