RC FUNCTION = 70 Throttle

Hello all i got a little issue with a twin Eng plane
i cant get it to work on RC11_FUNCTION = 70 Throttle it work if i use 1 RCPassThru or 53 RCIN3 just cant get to work RC11_FUNCTION = 70 Throttle its like its not getting ppm signal esc just sits there beeping


same problem here… does anybody have a solution already?

yesget a Y lead less hassle