diff --git a/My Project/AssemblyInfo.vb b/My Project/AssemblyInfo.vb
index ce25dac..15015f1 100644
--- a/My Project/AssemblyInfo.vb	
+++ b/My Project/AssemblyInfo.vb	
@@ -59,5 +59,5 @@ Imports System.Windows
 ' by using the '*' as shown below:
 ' <Assembly: AssemblyVersion("1.0.*")> 
 
-<Assembly: AssemblyVersion("2.3.9.2")>
-<Assembly: AssemblyFileVersion("2.3.9.2")>
+<Assembly: AssemblyVersion("2.3.9.3")>
+<Assembly: AssemblyFileVersion("2.3.9.3")>
diff --git a/OptionWindow/OptionWindowV.xaml b/OptionWindow/OptionWindowV.xaml
index 7087be1..4385906 100644
--- a/OptionWindow/OptionWindowV.xaml
+++ b/OptionWindow/OptionWindowV.xaml
@@ -71,6 +71,8 @@
 
          <DockPanel>
 
+                
+
             <UniformGrid Grid.Row="2" Columns="2"
                          DockPanel.Dock="Bottom">
                <Button Content="{Binding NewMatMsg}" Grid.Column="1"
@@ -83,16 +85,36 @@
                        Margin="2.5,0,0,0"/>
             </UniformGrid>
 
-            <EgtWPFLib5:EgtTextBox Text="{Binding NewMatName}"
-                                   DockPanel.Dock="Bottom" Width="240"
-                                   Visibility="{Binding NewMatName_Visibility}"
-                                   Margin="0,0,0,5"/>
+                <Grid DockPanel.Dock="Bottom" Visibility="{Binding NewMatName_Visibility}">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="4*"/>
+                        <ColumnDefinition Width="1*"/>
+                        <ColumnDefinition Width="1*"/>
+                    </Grid.ColumnDefinitions>
+                    <EgtWPFLib5:EgtTextBox Text="{Binding NewMatName}"
+                                DockPanel.Dock="Bottom"          
+                                Margin="0,0,0,5"/>
+                    <Button Content="{Binding OkMsg}" Grid.Column="1"
+                            Command="{Binding OkCommand}"
+                            IsEnabled="{Binding EnableOkNewMat}"
+                            Style="{StaticResource OptionPanel_TextButton}"
+                            Margin="2.5,0,0,2.5"/>
+                    <Button Content="{Binding CancelMsg}" Grid.Column="2"
+                            Command="{Binding CamcelCommand}"
+                            Style="{StaticResource OptionPanel_TextButton}"
+                            Margin="2.5,0,0,2.5"/>
+                </Grid>
+                
+             <!--<EgtWPFLib5:EgtTextBox Text="{Binding NewMatName}"
+                                DockPanel.Dock="Bottom" Width="240"
+                                Visibility="{Binding NewMatName_Visibility}"
+                                Margin="0,0,0,5"/>-->
 
-            <ListBox ItemsSource="{Binding MaterialList}"
-                     SelectedItem="{Binding SelMaterial}"
-                     Grid.RowSpan="2"
-                     Margin="0,0,0,5"
-                     Height="150"/>
+             <ListBox ItemsSource="{Binding MaterialList}"
+                  SelectedItem="{Binding SelMaterial}"
+                  Grid.RowSpan="2"
+                  Margin="0,0,0,5"
+                  Height="150"/>
 
          </DockPanel>
 
diff --git a/OptionWindow/OptionWindowVM.vb b/OptionWindow/OptionWindowVM.vb
index 0dfbd91..663e77c 100644
--- a/OptionWindow/OptionWindowVM.vb
+++ b/OptionWindow/OptionWindowVM.vb
@@ -129,22 +129,18 @@ Public Class OptionWindowVM
       Set(value As String)
          m_NewMatName = value
          ' Verifico che il nome non sia vuoto
-         If Not String.IsNullOrWhiteSpace(m_NewMatName) Then
-            ' Verifico che il nome non sia già utilizzato
-            Dim bNameExist As Boolean = False
-            For Each Material In m_MaterialList
-               If Material = m_NewMatName Then
-                  bNameExist = True
-                  Exit For
-               End If
-            Next
-            If Not bNameExist Then
-               m_MaterialList.Add(m_NewMatName)
-            End If
-         End If
-         ' Nascondo textbox per il nome
-         NewMatName_Visibility = Visibility.Collapsed
-         m_NewMatName = String.Empty
+         AddNewMaterial()
+         NotifyPropertyChanged("EnableOkNewMat")
+      End Set
+   End Property
+
+   Private m_EnableOkNewMat As Boolean = False
+   Public Property EnableOkNewMat As Boolean
+      Get
+         Return m_EnableOkNewMat
+      End Get
+      Set(value As Boolean)
+         m_EnableOkNewMat = value
       End Set
    End Property
 
@@ -221,12 +217,26 @@ Public Class OptionWindowVM
       End Get
    End Property
 
+   Public ReadOnly Property OkMsg As String
+      Get
+         Return "Ok"
+      End Get
+   End Property
+
+   Public ReadOnly Property CancelMsg As String
+      Get
+         Return "Cancel"
+      End Get
+   End Property
+
 #End Region    ' Messages
 
    ' Definizione comandi
    Private m_cmdNewMat As ICommand
    Private m_cmdRemoveMat As ICommand
    Private m_cmdBrowse As ICommand
+   Private m_cmdOk As ICommand
+   Private m_cmdCanel As ICommand
 
 #End Region    ' FIELDS & PROPERTIES
 
@@ -275,6 +285,29 @@ Public Class OptionWindowVM
       End While
    End Sub
 
+   Private Function AddNewMaterial() As Boolean
+      If Not String.IsNullOrWhiteSpace(m_NewMatName) Then
+         ' Verifico che il nome non sia già utilizzato
+         Dim bNameExist As Boolean = False
+         For Each Material In m_MaterialList
+            If Material = m_NewMatName Then
+               bNameExist = True
+               Exit For
+            End If
+         Next
+         If Not bNameExist Then
+            'm_MaterialList.Add(m_NewMatName)
+            m_EnableOkNewMat = True
+            Return True
+         End If
+      End If
+      ' ' Nascondo textbox per il nome
+      ' NewMatName_Visibility = Visibility.Collapsed
+      ' m_NewMatName = String.Empty
+      m_EnableOkNewMat = False
+      Return False
+   End Function
+
 #End Region
 
 #Region "COMMANDS"
@@ -302,6 +335,60 @@ Public Class OptionWindowVM
 
 #End Region    ' NewMatCommand
 
+#Region "OkCommand"
+
+   ''' <summary>
+   ''' Returns a command that do Exec.
+   ''' </summary>
+   Public ReadOnly Property OkCommand As ICommand
+      Get
+         If m_cmdOk Is Nothing Then
+            m_cmdOk = New Command(AddressOf OkMat)
+         End If
+         Return m_cmdOk
+      End Get
+   End Property
+
+   ''' <summary>
+   ''' Execute the Exec.  This method is invoked by the ExecCommand.
+   ''' </summary>
+   Public Sub OkMat(ByVal param As Object)
+      ' aggiungo il materiale alla lista
+      m_MaterialList.Add(m_NewMatName)
+      ' Nascondo textbox per il nome
+      NewMatName_Visibility = Visibility.Collapsed
+      m_NewMatName = String.Empty
+      NotifyPropertyChanged("NewMatName")
+   End Sub
+
+#End Region    ' OkCommand
+
+#Region "CancelCommand"
+
+   ''' <summary>
+   ''' Returns a command that do Exec.
+   ''' </summary>
+   Public ReadOnly Property CamcelCommand As ICommand
+      Get
+         If m_cmdCanel Is Nothing Then
+            m_cmdCanel = New Command(AddressOf CancelMat)
+         End If
+         Return m_cmdCanel
+      End Get
+   End Property
+
+   ''' <summary>
+   ''' Execute the Exec.  This method is invoked by the ExecCommand.
+   ''' </summary>
+   Public Sub CancelMat(ByVal param As Object)
+      ' Nascondo textbox per il nome
+      NewMatName_Visibility = Visibility.Collapsed
+      m_NewMatName = String.Empty
+      NotifyPropertyChanged("NewMatName")
+   End Sub
+
+#End Region    ' CancelCommand
+
 #Region "RemoveMatCommand"
 
    ''' <summary>
diff --git a/Utility/Map.vb b/Utility/Map.vb
index d166e47..172fe64 100644
--- a/Utility/Map.vb
+++ b/Utility/Map.vb
@@ -139,7 +139,7 @@ Module Map
              Not IsNothing(LibMap.refSceneHostVM) AndAlso
              Not IsNothing(PhotoMap.refOptionPanelVM) AndAlso Not IsNothing(PhotoMap.refListPageVM) AndAlso
              Not IsNothing(PhotoMap.refDetailPageVM) AndAlso Not IsNothing(PhotoMap.refSearchPanelVM) AndAlso
-             PhotoMap.ContninueApplication
+             PhotoMap.ContinueApplication
    End Function
 
 #End Region    ' Init