Pixhawk default PWM when safety switch is "off" (blinking once)

[JoonmoAhn]

Hi, I'm trying to change default MAIN PWM values when safety switch is "off" (blinking once). I build with "px4fmu-v2_default". And, my airframe is "Octo-x".
Now, my default MAIN PWM value when switch is off is 900. But, I want to change it to some other value, such as 1480.
I tried changing PWM_DISARMED paramater with QGroundControl, but when I checked with "pwm info", it still didn't work (default PWM still remained 900).
What should I change in QGroundControl? or what should I change in source code?

[JoonmoAhn]

Solved the problem. I needed to change PWM value at QGC, and reboot the machine.. Silly mistake.