Custom data through ELRS

what my setup here is I’m receiving video feed from the drone on two receivers, one on the goggles and the other on a separate VRx connected to my pi 5
What i want is to select pixel values from the feed and send it back to the drone via my radiomaster boxer RC, is this a possible scenario?

RPi can send named floats on the MAVLink network if you use ELRS in MAVLink mode.

thank you, I’ll try this out