// used for in-editor functionality
protected static IEnumerator InvokeCallbackNextFrame(string state, string tag)
{
yield return(null); // wait a frame
HZOfferWallAd.SetCallbackStateAndTag(state, tag);
}
// received from native SDK
public void SetCallback(string message)
{
string[] displayStateParams = message.Split(',');
HZOfferWallAd.SetCallbackStateAndTag(displayStateParams[0], displayStateParams[1]);
}