I'm using the JR S400 Tx that came with my trainer. I don't believe it has that functionality.

Am I screwed?

EDIT: I checked the manual, and there are reverse switches hidden in the back. The down side is, that means I have to reset the switches any time I want to switch between planes. Not the end of the world, but still a bummer. A much bigger bummer if I forget to do it!

Thanks.