Android [cocos2d-x]: Problem rewarding the user

Hi,

I'm making an Android game with cocos2d-x.
I succeeded to show a video ad in my game, thanks to this example and this wiki.
But I don't understand how I can reward the user.

Do I have to call the "onVideoCompleted(String itemKey, boolean skipped)" method? If Yes, how?
(If I put a "log" in this method, nothing appears.)

Also in the UnityAds.java, there is this function: "onMainViewAction (UnityAdsMainViewAction action)". Do I have to call it? and how?


Thank you

 

@unity-nikkolai , is there an Unity developer who can help me?

Thank you