Assigning Nav Lights Switch to HOTAS System

I got the new Saitek Rino HOTAS system (won it in a contest). Im setting it up in X-plane 10 and have it just about done. Id like to assign the Nav and Beacon lights to a switch on the controller. However, I don't see a listing for it in the Joysticks settings of X-plane.

Is there a way to set this using another method?

Rob