Mutiple barcodes in .tif file

Can somebody point me to an example of a process that can handle mutiple barcodes in a single document ?

I have created a form in designer with a QR barcode, saved to a tif file. I am able to extract the data to xml using Barcode Forms decoder followed by extract to xml. When adding a second barcode it fails with  java.lang.ArrayIndexOutOfBoundsException,

how should I change the process to handle multiple barcodes ?

thanks

Steve