Hi. I'm getting sometimes this error: "H:\_Conrad lokal\Downloads\AutoIt3\Include\Excel.au3" (227) : ==> Variable must be of type "Object".: $oExcel.Windows($oWorkbook.Name).Visible = $bVisible $oExcel.Windows($oWorkbook.Name)^ ERROR The current code for that is: Func _Excel_BookOpen($oExcel, $sFilePath, $bReadOnly = Default, $bVisible = Default, $sPassword = Default, $sWritePassword = Default, $bUpdateLinks = Default) ; Error handler, automatic clean