public void SaveTransactionImages(ObservableCollection<TransactionImage> transactionImages)
            {
                App.Instance.StaticServiceData.SetServerStatus(status =>
                {
                    //continue with local if status is ok but is pending Sync
                    if (status != Model.StaticServiceData.ServerStatus.Ok || !App.Instance.IsSync)
                    {
                        foreach (var item in TransactionImageList.Where(x => x.HasChanges))
                            item.HasChanges = false;

                        //await UpdateCacheTransactionImages();

                        App.Instance.IsSync = false;
                    }
                    else
                    {
                        var client = new MainClient();
                        client.SaveTransactionImagesAsync(transactionImages);
                        client.SaveTransactionImagesCompleted += (sender, completedEventArgs) =>
                        {
                            if (completedEventArgs.Error == null)
                            {
                                //SetupTransactionImageList(completedEventArgs.Result);
                                
                                //Only update sync when offline and in login and main pages
                                //App.Instance.IsSync = true;
                            }
                        };
                    }
                });
            }