Print QR-Code [GraffittiWeb & DynaPDFStarter]

I have the Graffitti Web - Plugin, which could generate QR-Codes at the screen. This works.
I have the DynaPDF-Starter - Plugin von MBS. With this plugin I can print beautiful PDFs. This works, too.

Now my problem: I tried to print QR-Codes. But I don’t know how to do it. I tried to use the QR-Codes from Graffitti Web in combination with the DynaPDFStarter. But I got the error "There is more than one item with this name and it’s not clear to which this referes.

My source code:

  dim QRCode as GraffitiWebQR 
  QRCode.QRValue = "Hallo Welt"

  call pdf.InsertPicture(QRCode, 50 ,50,  100, 100)

My goal is printing a QRCode into a PDF-Files.

please provide coordinates there as double (add .0 on the numbers).
The Xojo compiler is confused with those integers.

PS: MBS Plugin also create barcode and can draw them as vector graphics!