how to put cruise control switch back together?

I was giving the car a big clean and decided to take the cover off the cruise control switch to clean it.

I got it back together and now I don't have cruise, I assume I put it back together incorrectly.

There is a silver metal barrel and a spring, what is the correct way/direction the metal barrel is supposed to sit and where does it go exactly?

how to put cruise control switch back together?