Private Sub CDP_Click()
Dim Plage As Range, Trouve As Range, DerL As Integer
With Worksheets("Parametre")
DerL = .Range("J" & Rows.Count).End(xlUp).Row
Set Plage = .Range("J2:J" & DerL)
Set Trouve = Plage.Find(Liste_Nom_IDX)
If CDP Then
If Trouve Is Nothing Then .Range("J" & DerL + 1) = Liste_Nom_IDX
Else
If Not Trouve Is Nothing Then .Range("J" & Trouve.Row).Delete Shift:=xlUp
End If
End With
End Sub