Draw Bitmap inside PDF

for n := 0 to Lst.Count - 1 do
   begin
      wp.LoadFromFile(lst[n]) ;
      StampMeta:=TmetaFile.create;
      StampMetaCan := TMetafileCanvas.Create(StampMeta,0);


      try
         bmp:=TBitmap.create;
         bmp.width:=WPCentimeterToPixel(3.5 ,200);
         bmp.height:=WPCentimeterToPixel(1.2,200);
         bmp.loadFromFile('c:\tmp\image.bmp');




         StampMetaCan.Draw(6,6, bmp);


      finally
           StampMetaCan.Free;
      end;
      wp.CommandStrEx(495,'1-2', StampMeta.Handle);


      wp.Plus.SetSecurityMode(wpNoSecurity);
      wp.Plus.SaveToFile('c:\tmp\pdf\'+ExtractFileName(lst[n]));
      StampMeta.free;
      bmp.freE;
  end;