audio.setvolume problem

[nicolasps3]

Hello,
Maybe this a bug¿?

The project content only 1 page:
In properties of this page in "on preload":

Audio.ToggleMute(CHANNEL_EFFECTS);
Audio.SetVolume(CHANNEL_USER1, 20);

In the page add a one button. Properties "on click":

Audio.Load(CHANNEL_USER1, "AutoPlay\\Audio\\Earth.ogg", false, false);
Audio.Play(CHANNEL_USER1);

///===///===///===///===///===///===///===///
The problem: The sound do not change the volume to 20. I try put Audio.SetVolume in "on show" and the same result.
If I set "Audio.SetVolume(CHANNEL_ALL, 20)" in properties of page ; this work.
I don't like put in any bottom the sentence of volume audio.

Any idea?
Thanks,