I am using 128SSCC barcode with application identifier 37 "Number of units contined" which can have up to 8 characters. If the length is less than 8 characters then I have to add a group separator ASCII(29). The problem is that I don't know how to add this group separator. I tried with formcalc and with javascript but the barcode reader doesn't recognize it. Can you please help me with suggestions about how can I put a group separator ? Thanks
