How can I make a gear that changes a variable? [SOLVED]

I'm trying to make a gear that changes a variable when it touches the detector brick. I set up a script to print the variable, but even after the gear touches the detector, it prints "nil". Can someone help?

function touched(otherPart)
    if otherPart.name == game.Workspace.detector then
        _G.gearInside = true
    end
end

script.Parent.Parent.Touched:connect(touched)