GS1-128 is a barcode that uses a series of application identifiers to encode data. This barcode makes use of the complete ASCII character set and places the FNC1 character in the first character position.

This interface extends IBarcode, ILabelOption, and IFontOption to provide barcode content, label, and font-related options for a GS1-128 barcode.

 worksheet.getRange("A1").setValue("123456789");
 worksheet.getRange("B1").setFormula("=BC_GS1_128(A1)");
 IGS1128 barcode = (IGS1128) worksheet.getRange("B1").getValue();
 String value = barcode.getValue();