Thanks for help but not working.
Only could program the "AUD" device key for Powering on and off my receiver.
Other device key such as " Aux" and "DVD" could not be program to turn on or turn off power"

UPDATE:
Got it working after some research! I have to use 9-9-2 command to reassign the "AUD" key to the "AUX" key , then I could program it to "Power on and off"

Anyhow, Thanks a lot!