diff --git a/CamAuto.vb b/CamAuto.vb
index 62bb531..d4a9681 100644
--- a/CamAuto.vb
+++ b/CamAuto.vb
@@ -1056,7 +1056,8 @@ Friend Module CamAuto
          End If
          ' Calcolo elevazione
          Dim ptP1, ptP2 As Point3d
-         If Not EgtSurfTmFacetOppositeSide(nSurfId, nFacetInd, vtSide, GDB_ID.ROOT, ptP1, ptP2) Then Return False
+         Dim vtV1, vtV2 As Vector3d
+         If Not EgtSurfTmFacetOppositeSide(nSurfId, nFacetInd, vtSide, GDB_ID.ROOT, ptP1, ptP2, vtV1, vtV2) Then Return False
          Dim ptPM As Point3d = Point3d.Media(ptP1, ptP2)
          Dim vtElev As Vector3d = vtN ^ (vtSide ^ vtN)
          If Not vtElev.Normalize() Then Return False
diff --git a/My Project/AssemblyInfo.vb b/My Project/AssemblyInfo.vb
index d0cd139..aefecd0 100644
--- a/My Project/AssemblyInfo.vb	
+++ b/My Project/AssemblyInfo.vb	
@@ -62,5 +62,5 @@ Imports System.Windows
 ' by using the '*' as shown below:
 ' <Assembly: AssemblyVersion("1.0.*")> 
 
-<Assembly: AssemblyVersion("1.9.9.4")> 
-<Assembly: AssemblyFileVersion("1.9.9.4")> 
+<Assembly: AssemblyVersion("1.9.10.1")> 
+<Assembly: AssemblyFileVersion("1.9.10.1")> 
diff --git a/SimulationPageUC.xaml.vb b/SimulationPageUC.xaml.vb
index 55ceb94..d3f60ab 100644
--- a/SimulationPageUC.xaml.vb
+++ b/SimulationPageUC.xaml.vb
@@ -1,4 +1,5 @@
-Imports EgtUILib
+Imports System.Runtime.InteropServices
+Imports EgtUILib
 
 Public Class SimulationPageUC
    ' Riferimenti a pagine
@@ -7,6 +8,7 @@ Public Class SimulationPageUC
 
    ' Funzioni di callback per output in interfaccia da LUA
    Private m_ProcEventsCallback As New ProcessEventsCallback(AddressOf ProcessEvents)
+   Private m_OutTextCallback As New OutTextCallback(AddressOf ProcessOutText)
 
    ' Stato di visualizzazione della macchina
    Private m_nMachLook As Integer = MCH_LOOK.ALL
@@ -161,6 +163,7 @@ Public Class SimulationPageUC
       EgtZoom(ZM.ALL)
       ' Registro funzione su aggiornamento interfaccia da sotto
       EgtSetProcessEvents(m_ProcEventsCallback)
+      EgtSetOutText(m_OutTextCallback)
       ' Avvio ambiente di simulazione
       EgtSimInit()
       EgtSimStart()
@@ -464,6 +467,7 @@ Public Class SimulationPageUC
       EgtEnableModified()
       ' Reset funzione callback su evento aggiornamento interfaccia da sotto
       EgtSetProcessEvents(Nothing)
+      EgtSetOutText(Nothing)
       ' Esco dalla pagina
       m_MainWindow.m_CurrentProjectPageUC.CurrentProjectPageGrid.Children.Remove(Me)
       m_CurrProjPage.CurrProjGrid.Visibility = Windows.Visibility.Visible
@@ -480,7 +484,7 @@ Public Class SimulationPageUC
 
    End Sub
 
-   Private Function ProcessEvents(ByVal nProg As Integer, ByVal nPause As Integer) As Integer
+   Private Function ProcessEvents(nProg As Integer, nPause As Integer) As Integer
       ' Visualizzo assi
       ShowCncData()
       ' Costringo ad aggiornare UI
@@ -488,4 +492,17 @@ Public Class SimulationPageUC
       Return 0
    End Function
 
+   Private Function ProcessOutText(ByRef psText As IntPtr) As Boolean
+      ' Emetto stringa di testo
+      Dim sText As String = (Marshal.PtrToStringUni(psText))
+      If Not String.IsNullOrWhiteSpace(sText) Then
+         m_CurrProjPage.SetInfoMessage(sText)
+      Else
+         m_CurrProjPage.ClearMessage()
+      End If
+      ' Costringo ad aggiornare UI
+      UpdateUI()
+      Return True
+   End Function
+
 End Class