Flight Mode Switch Not Working Devo 7e

I recently put Deviationtx on my Devo 7e, and I am trying to set this transmitter up with my 250 quad. I am trying to use Openpilot to set it up, but when I get to the flight mode switch part, nothing happens. I looked through the settings and all, and I can't find anything in the channel monitor that even shows the FMOD switch. For some reason it's like it doesn't even exist. I do see the HOLD switch is working however. Does anyone have any ideas on how I can get it working?

First up check the Input Monitor to see whether your physical inputs are working; there's a BIG difference between the Inputs and the Channels, they aren't related in any way at all.
I'm guessing you don't have anything setup in a channel to handle FMOD. As the 7E is only a 2-position switch, this solution may be the simplest; channel mixer as Simple, source as FMOD, curve as Min/Max. This should toggle between -100 and +100, if you want other values you'll have to specify them, eg. via a mixer of type Expo/DR