Android Data Wedge enable FNC1


we are experiencing some issues in parsing Gs1 128 codes on an MC 18 Android device. The main issue is we cannot determine if the barcode is a Gs1 128 one as we don't seem to receive the FNC1 character in the scanned text. We know this is not a readable character so how could we make data wedge to substitute this function character with something we can read in our code?