diff --git a/Controller.vb b/Controller.vb
index 24421a9..ae87e8e 100644
--- a/Controller.vb
+++ b/Controller.vb
@@ -4129,9 +4129,9 @@ Public Class Controller
          Dim nId As Integer = EgtGetLastSelectedObj()
          EnableCommandLog()
          EgtSplitCurveAtPoint(nId, m_ptLast.Loc(GDB_ID.GRID), GDB_RT.GRID)
+         EgtDeselectObj(nId)
          DisableCommandLog()
          ' reset stato scena
-         EgtDeselectObj(nId)
          m_Scene.ResetStatus()
          ' aggiorno stato
          m_nStep = 0
@@ -4159,9 +4159,9 @@ Public Class Controller
          Dim nId As Integer = EgtGetLastSelectedObj()
          EnableCommandLog()
          EgtSplitCurve(nId, m_nLast)
+         EgtDeselectObj(nId)
          DisableCommandLog()
          ' reset stato scena
-         EgtDeselectObj(nId)
          m_Scene.ResetStatus()
          ' aggiorno stato
          m_nStep = 0
@@ -4245,9 +4245,9 @@ Public Class Controller
          Dim nId As Integer = EgtGetLastSelectedObj()
          EnableCommandLog()
          EgtChangeClosedCurveStartPoint(nId, m_ptLast.Loc(GDB_ID.GRID), GDB_RT.GRID)
+         EgtDeselectObj(nId)
          DisableCommandLog()
          ' reset stato scena
-         EgtDeselectObj(nId)
          m_Scene.ResetStatus()
          ' aggiorno stato
          m_nStep = 0
@@ -4977,16 +4977,17 @@ Public Class Controller
          ' reset stato scena
          m_Scene.ResetStatus(False)
          EnableCommandLog()
-         ' eseguo copia e offset
+         ' eseguo offset con copia
+         Dim nCount As Integer
          If m_bLast Then
-            Dim nId As Integer = EgtCopyGlob(EgtGetLastSelectedObj(), GetCurrLayer())
-            If Not EgtOffsetCurve(nId, m_dLast, m_nLast) Then
-               EgtErase(nId)
-            End If
+            EgtOffsetCurveAdv(EgtGetLastSelectedObj(), m_dLast, m_nLast, nCount)
          ' altrimenti solo offset
          Else
             Dim nId As Integer = EgtGetLastSelectedObj()
-            Dim bOk = EgtOffsetCurve(nId, m_dLast, m_nLast)
+            Dim bOk = EgtOffsetCurveAdv(nId, m_dLast, m_nLast, nCount)
+            If nCount > 0 Then
+               EgtErase(nId)
+            End If
          End If
          DisableCommandLog()
          EgtDraw()
@@ -5009,10 +5010,12 @@ Public Class Controller
          PrepareTransform(False)
          ' eseguo offset
          Dim nId As Integer = EgtGetFirstInGroup(m_Scene.GetDragGroup())
-         Dim bOk = EgtOffsetCurve(nId, m_dLast, m_nLast)
-         If Not bOk Then
+         Dim nCount As Integer
+         EgtOffsetCurveAdv(nId, m_dLast, m_nLast, nCount)
+         If nCount <= 0 Then
             RaiseEvent OutputInfo(Me, EgtMsg(2056))        ' Distance too big
          Else
+            EgtErase(nId)
             RaiseEvent OutputInfo(Me, "")
          End If
          EgtDraw()
diff --git a/EgtInterface.vb b/EgtInterface.vb
index 2ec0847..11bfd02 100644
--- a/EgtInterface.vb
+++ b/EgtInterface.vb
@@ -2466,6 +2466,20 @@ Public Function EgtOffsetCurve(ByVal nId As Integer, ByVal dDist As Double, ByVa
    End If
 End Function
 
+<DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtOffsetCurveAdv")>
+Private Function EgtOffsetCurveAdv_32(ByVal nId As Integer, ByVal dDist As Double, ByVal nType As OFF_TYPE, ByRef nCount As Integer) As Integer
+End Function
+<DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtOffsetCurveAdv")>
+Private Function EgtOffsetCurveAdv_64(ByVal nId As Integer, ByVal dDist As Double, ByVal nType As OFF_TYPE, ByRef nCount As Integer) As Integer
+End Function
+Public Function EgtOffsetCurveAdv(ByVal nId As Integer, ByVal dDist As Double, ByVal nType As OFF_TYPE, ByRef nCount As Integer) As Integer
+   If IntPtr.Size = 4 Then
+      Return EgtOffsetCurveAdv_32(nId, dDist, nType, nCount)
+   Else
+      Return EgtOffsetCurveAdv_64(nId, dDist, nType, nCount)
+   End If
+End Function
+
 <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtApproxCurve")>
 Private Function EgtApproxCurve_32(ByVal nId As Integer, ByVal nApprType As Integer, ByVal dLinTol As Double) As Boolean
 End Function
diff --git a/My Project/AssemblyInfo.vb b/My Project/AssemblyInfo.vb
index d4b800c..2dba191 100644
--- a/My Project/AssemblyInfo.vb	
+++ b/My Project/AssemblyInfo.vb	
@@ -46,5 +46,5 @@ Imports System.Runtime.InteropServices
 ' utilizzando l'asterisco (*) come descritto di seguito:
 ' <Assembly: AssemblyVersion("1.0.*")> 
 
-<Assembly: AssemblyVersion("1.6.9.7")> 
-<Assembly: AssemblyFileVersion("1.6.9.7")> 
+<Assembly: AssemblyVersion("1.6.9.8")> 
+<Assembly: AssemblyFileVersion("1.6.9.8")>