diff --git a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
index 5624a03..b39c718 100644
--- a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
+++ b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
@@ -119,11 +119,7 @@ Public Class MachiningParameterExpanderVM
       End Set
    End Property
    Friend Sub ResetSliderValue()
-      If m_nPreviewMachiningTool = MCH_LOOK.TAB_TOOL OrElse m_nPreviewMachiningTool = MCH_LOOK.TAB_HEAD Then
-         m_nPtEntId = EgtPreviewMachiningTool(GDB_ID.NULL, MCH_PTM.AFTER)
-      Else
-         m_nPtEntId = GDB_ID.NULL
-      End If
+      m_nPtEntId = EgtPreviewMachiningTool(GDB_ID.NULL, MCH_PTM.AFTER)
       m_SliderValue = 1
       NotifyPropertyChanged(NameOf(SliderValue))
    End Sub