Connecting Orange ORX 8 CH Receiver to Naza M Lite

[AlienNet]

Hi, i have just built another Multicopter,with Naza M Lite FC Sys, my previous used Spektrum Receivers, but this time im trying a Orange R800X 8 CH Receiver, i have connected as follows:
CH1 to T
CH2 to A
CH3 to E
CH4 to R
CH5 to U

i understand that CH6 is flaps which i dont need for a Multicoptor, CH7 is AUX 1 & CH8 is AUX2 i would like to use my aux CHs from Naza (X1 & X2) But as my Transmitter is only 7 CH, Could i use X1 to CH6 (Flaps) and X2 to CH7 AUX, so that i can have 2 AUX CHs ?

Thanks.