[SOLVED] 3 Position Switches and Betaflight?

I know there are already a ton of topics answering this question, but I cannot seem to get this to work. I made 3 mixes on channel 6 with the switch set to the flight mode switches, and no source, with fixed expo. However, it doesn't seem to output to the channel. It doesn't even show up in the channel preview. Help?

EDIT: I'm a massive idiot and skipped the step where you enter the scale values