Hi Tsutomu,
yes it is ok.
Actually it doesn't matter: You can assign each single channel mode to the AFPD functions, additionally reverse and add expo to them. Also you can save your preferred assignment.
Hint for AFPD-users:
Sometimes some friends visit me to fly with AFPD.
Therefore I saved the 4 different modes for both my Transmitter FC18 and the gamecommander.
Since throttle stick has to be available on both sides, 2 modes have to turn the tx for 180 degrees and reverse the functions. Now it's extremely easy to hand it to somebody else flying any mode: Just select the mode and rotate the tx.
Regards
Karl-Heinz (Rodeo)
www.rodeo.onlinehome.de