Airplane mode in emulator is OK, but....

:sign0085:
Hi,

I'm reading this:
http://www.b4x.com/forum/basic4andr...ammatically-setting-airplane_mode_on-off.html
and created a small software (service) to schedule the shutdown and the activation of the radio.
In the emulator everything works perfectly.

In my device works only one direction (AIRPLANE_MODE_ON to AIRPLANE_MODE_OFF). There is another way to get the same result?
I found this free app on the market that works well with my phone:
https://market.android.com/details?id=com.schreinerDev.airplanemodetoggle
You can understand how it works? (with small example, please)

Best Regards
pascal