Sub test()
Dim Feuille As Worksheet
Set Feuille = Sheets(2)
With Feuille.Range("A1600")
MsgBox .Parent.Name & Chr(13) & .Address(0, 0), vbInformation, "Test 1"
End With
Sheets(1).Activate
Range("A1").Select
With Selection
MsgBox .Parent.Name & Chr(13) & .Address(0, 0), vbInformation, "Test 2"
End With
End Sub