C2 music not setting to mute when video reward is showing

Hi guys! Here´s the situation, I´m using this chartboost cordova plugin

https://github.com/cranberrygame/cordov ... chartboost

It works perfectly but I can´t set the music to mute when a video is showing

Currently here´s the logic

Is showing rewarded video ---------> Audio --> set silent

Audio --> set "Game Music" playback rate to 0

AndreasR I don´t know if you have experiance with this plugin, but any tips?

Thanks