problem with printOut under word.interop

[Developpeurvb]

hi
I have problem to print document under word.interop.
My aplication make a document in word application (pilot to word interop).
I Have 2 document in A5 format page.
I seacrh solution to print this 2 page A5 in 1 page A4.
i have use this code :

With WordApp
     .PrintOut( _
               FileName:="", _              
 
Range:=Microsoft.Office.Interop.Word.WdPrintOutRange.wdPrintAllDocument, _
                                Item:=Microsoft.Office.Interop.Word.WdPrintOutItem.wdPrintDocumentContent, _
                Pages:="1,2", _
                Copies:=1, _
PageType:=Microsoft.Office.Interop.Word.WdPrintOutPages.wdPrintAllPages, _
ManualDuplexPrint:=False, _
                 Collate:=True, _
                 PrintToFile:=False, _
                 PrintZoomColumn:=2, _
                 PrintZoomRow:=1, _
                 PrintZoomPaperWidth:=11907, _
                 PrintZoomPaperHeight:=16839)
End With
 

But this do not run.
Do you have an idea ?
thank