Sub Select_Ajouter_Feuil()
Dim n, s, i&
On Error Resume Next: n = CDbl(ActiveSheet.Name): On Error GoTo 0
If n <> Int(n) Then Exit Sub
If n < 1 Or n > 98 Then Exit Sub
n = n + 1: s = Format(n, "00")
On Error GoTo ERR_new
Application.Goto Sheets(s).Range("a1")
Exit Sub
ERR_new:
For i = Sheets.Count To 1 Step -1
If Sheets(i).Name Like "##" Then Sheets("Matrice").Copy after:=Sheets(i): ActiveSheet.Name = s: Exit Sub
Next i
End Sub