public void RevokeItem(string itemInstanceId)
{
var revokeRequest = new AdminModels.RevokeInventoryItemRequest();
revokeRequest.PlayFabId = playFabId;
revokeRequest.CharacterId = characterId;
revokeRequest.ItemInstanceId = itemInstanceId;
PlayFabAdminAPI.RevokeInventoryItem(revokeRequest, RevokeItemCallback, PfSharedControllerEx.FailCallback("RevokeInventoryItem"));
}