void OnBuyMobilePricePoint(MobilePricePoint pricePoint, CoinPackage priceData)
 {
     Util.Log("OnBuyCoins mobile priceid = " + pricePoint.id);
     activeCoinPackage = priceData;
     mainMenu.SetFullscreenMode(false);
     FB.Canvas.Pay(priceData.url, "purchaseitem", 1, pricepointId: pricePoint.id, callback: PaymentCallback);
 }
 void OnBuyMobilePricePoint(MobilePricePoint pricePoint, CoinPackage priceData)
 {
     Util.Log("OnBuyCoins mobile priceid = " + pricePoint.id);
     activeCoinPackage = priceData;
     mainMenu.SetFullscreenMode(false);
     FB.Canvas.Pay(priceData.url, "purchaseitem",1, pricepointId:pricePoint.id, callback:PaymentCallback);
 }