GearVR sound problem.

Hello,

I am making a GearVR app based on sound and I have a problem with the GearVR system putting the volume very low (with headphones on).

Can we have access to the volume via script and it possible to set this volume from a script in Unity?

I have seen the OVRManager.volumelevel and OVRPlugin.systemVolume but I can't make it work.

(I am using Unity 5.1.3f1).

Thanks!