Content conversion - endSeparator and fieldSeparator with unusual separators

Hi Experts.

I have a problem with the content conversion of a file due to delimiters.

The problem is that the field separators and end line separators are:

fieldSeparator ¿ (ASCII hexadecimal code BF).

endSeparator  ¨  (ASCII hexadecimal code A8).

It seems like if the channel is not recognizing these characters.

1. If I use the character directly in content conversion:

    I get all the file data in the first field of my message:

    <Field1>xxxxxx¿sssssss¨xxxxxx¿sssssss¨<Field1>

2. If use ASCII Hexadecimal code in content conversion

    '0xBF'

    '0xA8'

     I get this error in communication channel:

    Conversion initialization failed: java.lang.Exception: java.lang.NumberFormatException: Value out of range. Value: "BF" Radix: 16

Any idea about how to solve this? Is that even possible to handle this kind of files with this unusual separators?

Thanks a lot in advance.

Christian.