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   procedure stampPDF();
   var
     DC   : Variant;
     RVal : Integer;
   begin
     try
       DC := CreateOleObject('Neevia.docCreator');

       DC.setParameter('StampMessage', 'Page {p} of {P}');

       DC.setParameter('StampRotate', '0');
       DC.setParameter('StampX', '100');
       DC.setParameter('StampY', '100');
       DC.setParameter('StampFontName', 'Helvetica');
       DC.setParameter('StampFontSize', '14');
       DC.setParameter('StampFontColor', '$000000');

       //place the watermark as stamp (over the page content)
       DC.setParameter('Watermark', 'false');

       DC.setParameter('PlaceStampOnPages', '0');

       RVal := DC.stampPDF('c:\users\public\in.pdf', 'c:\users\public\out.pdf');

       if (RVal <> 0) then
          ShowMessage('There was an error!!! Code: '+IntToStr(RVal))
       else
          ShowMessage('Done !!!');
     finally
       DC := Unassigned;
     end;
   end;