diff --git a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderView.xaml b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderView.xaml
index c923026..7a5a32b 100644
--- a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderView.xaml
+++ b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderView.xaml
@@ -22,8 +22,8 @@
                <Button Content="New Positioning" Command="{Binding NewPositioningCommand}"  Height="40"/>
                <Button Content="Cancel Operation" Command="{Binding CancelOperationCommand}"  Height="40"/>
             </UniformGrid>
-            <ListBox IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding OperationList}" SelectedItem="{Binding SelectedOperation}"
-                     MaxHeight="400" x:Name="OperationList" IsEnabled="{Binding IsEnabledOperationList}">
+            <ListBox IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding OperationList,Mode=OneWay}" SelectedItem="{Binding SelectedOperation,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
+                     MaxHeight="200" x:Name="OperationList" IsEnabled="{Binding IsEnabledOperationList}">
                <ListBox.ItemTemplate>
                   <DataTemplate>
                      <Grid>
diff --git a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
index b3f75b3..6a3d37e 100644
--- a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
+++ b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
@@ -120,6 +120,7 @@ Namespace EgtCAM5
                End If
                m_SelectedOperation = value
             End If
+            OnPropertyChanged("SelectedOperation")
          End Set
       End Property
 
@@ -467,6 +468,8 @@ Namespace EgtCAM5
             EgtRelocate(SelectedOperation.Id, PreviousId, GDB_POS.BEFORE)
             ' Ricarico la lista delle operazioni
             Application.Msn.NotifyColleagues(Application.LOADOPERATIONLIST)
+            ' Riseleziono l'entità selezionata
+            Me.SelectedOperation = SelectedOperation
          End If
       End Sub