What's wrong with my trigger set-up?

I’m trying to figure out how to set up a trigger. Nothing I’ve done or tried has worked. I’m sure it’s something very simple, but for the life of me I can’t figure it out.

In this example, I have an FPS controller and a cube. When the controller passes through the cube, I want to be able to use onTriggerEnter() or stay or exit.

Capitalize.

	void OnTriggerEnter(Collider other) {
		print ("HI");
	}

Of course… I didn’t think of that at all… it accepted the lowercase thinking I was creating something new. I’m so used to Visual Studio telling me to fix things… blerg!

And thanks for the help!