For I = LBound(Fich) To UBound(Fich)
Workbooks.Open Filename:=Fich(I), ReadOnly:=True
Set OldWBK = ActiveWorkbook
OldWBK.Sheets(1).Copy After:=AcWBK.Sheets(AcWBK.Sheets.Count)
AcWBK.ActiveSheet.Name = OldWBK.Sheets(1).Range("B12")
OldWBK.Close False
Next I