Pixhawk telemetry to taranis with corssfire

Hi!
Im trying to see the pixhawk telemetry on my taranis using corssfire. I did connect the ch3 an ch4 to the serial 1 on the pixhawk and defined the ch3 and ch4 to be MAVL RX and MAVL TX. but I cant see the pixhawk sensors only the crossfire sensors. (the connection is right).

any help?
thanks Omri