private static void interstitialSuccessCallback(IntPtr interstitialHandlePtr, string networkName, double ecpm)
        {
            GCHandle interstitialHandle = (GCHandle)interstitialHandlePtr;
            AMRInterstitialViewDelegate delegateObject = interstitialHandle.Target as AMRInterstitialViewDelegate;

            delegateObject.didReceiveInterstitial(networkName, ecpm);
        }
 void onAdLoaded(string networkName, double ecpm)
 {
     delegateObj.didReceiveInterstitial(networkName, ecpm);
 }