Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Rows.Count > 1 And Target.Columns.Count > 1 Then Exit Sub
If Not IsEmpty(Target) Then
Select Case Target.Column
Case 6, 7
Target.Offset(0, 3) = "'."
''Case 9 ' problème
''Target.Offset(0, -3) = "'."
End Select
End If
End sub