Supplementals not Recognized for UPC-A Codes

[pbickford]

Getting fast and accurate detection of the main UPC code, but no matter which barcode options are set, have not been able to successfully detect a supplemental (common on periodicals and books).

Current BarcodeOptions:

        // Initialize barcode decode options
        BarCodeOptions = new BarcodeDecodeOptions
        {
            AutoRotate = false,
            TryHarder = true,
            TryInverted = false,
            PossibleFormats = { BarcodeFormat.EAN_13, BarcodeFormat.UPC_A, BarcodeFormat.UPC_E, BarcodeFormat.UPC_EAN_EXTENSION  },
            ReadMultipleCodes = true
        };

Have also tried reordering formats, eliminating al but BarcodeFormat.UPC_E. I only get the main barcode in result each time.

Any help would be GREATLY appreciated!
-Pete