Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
If Worksheets("Sheet1").Cells(D1,e1,f1,g1,h1,i1).Value <> 0 Then
Cancel = True
MsgBox "Your Modification Impacted the Utiliti, Please Register Your Impact in Order to be Able to Save your Contribution to the File!", vbOKOnly
Else
Cancel = False
End If
End Sub