RSSI Channel 9 on devo 10 with frsky problem

I'm using devo 10 with CC2500 module for frsky reciever ( F801 ). My rx has RSSI on SBUS is channel 9. I saw on my TX, Frsky protocol has just 8 channels. I try increasing the channel but have nothing, the maximum channel just 8 channels. What should i do now ?

Will be selected in the CL/Betaflight configurator! >>>receiver section.
This is not a steering signal channel and the SBus should be found on a tx output, if you have one, and not on the PWM
pins as CPPM.


Edit: However, on the telemetry page rssi should show up if you have this configured right.
Which firmware is on the receiver?

Check this here...
www.rcgroups.com/forums/showthread.php?2...-FrSky-TX-RX-Modules