Is it possible to track Facebook invites on Mobile?

I am developing a mobile game and at the time implementing Facebook integration. The idea here is to reward the player if he invites a certain number of people. I've tried both FB.Mobile.AppInvite and FB.AppRequest.

I've seen people tracking fb invites through FB.AppRequest, but when I called the function in the Android Emulator, the app Crashed.

The FB.Mobile.AppRequest function works just fine on the Emulator, but the result dictionary only records if the invite was sucessful, instead of also recording the number of invites sent.

Is there a way to track invites on Mobile with this function? Is there a better aproach to it?