diff --git a/MvvmCommunityApp/MainWindow.xaml b/MvvmCommunityApp/MainWindow.xaml
index e468cda..c58d23f 100644
--- a/MvvmCommunityApp/MainWindow.xaml
+++ b/MvvmCommunityApp/MainWindow.xaml
@@ -11,6 +11,9 @@
             <TextBlock Text="{Binding Title}" />
             <Button Content="Add"
                     Command="{Binding AddCommand}" />
+            <Button Content="Update"
+                    Command="{Binding UpdateCommand}" />
+            <TextBlock Text="{Binding Customer}" />
         </StackPanel>
     </Grid>
 </Window>
diff --git a/MvvmCommunityApp/viewmodels/MainWindowViewModel.cs b/MvvmCommunityApp/viewmodels/MainWindowViewModel.cs
index f17cf38..79b3065 100644
--- a/MvvmCommunityApp/viewmodels/MainWindowViewModel.cs
+++ b/MvvmCommunityApp/viewmodels/MainWindowViewModel.cs
@@ -8,6 +8,9 @@ namespace MvvmCommunityApp.viewmodels
     {
         public string Title { get; set; }
 
+        [ObservableProperty]
+        private string _customer;
+
         public MainWindowViewModel()
         {
             Title = "MyIocName";
@@ -19,5 +22,11 @@ namespace MvvmCommunityApp.viewmodels
         {
             Console.WriteLine("Do Add");
         }
+
+        [RelayCommand]
+        private void Update()
+        {
+            Customer = "New Customer";
+        }
     }
 }