ISO Message Representation , Wired behavior in the “pack” method in JPOS

I have 2 web services .. once accepts a payload like this :

{
    "MTI": "0100",
    "2": "4655206331051889",
    "3": "000000",
    "4": "000000012300",
    "7": "0321054133",
    "11": "001205",
    "14": "0325",
    "18": "5399",
    "22": "022",
    "25": "00",
    "35": "2312312332",
    "37": "206305000014",
    "41": "29110001",
    "42": "1001001",
    "49": "840"
}

I need to generate the ISO Message Representation from it and send it to the 2nd web service that accepts payload which contains a field IsoMsg : “The Iso Message Representation Goes here” .. and then unpack it …

The Problem is when i do pack to my first payload i got this wired representation :

     0100 001205 29110001

See ? Just MTI and 2 other fields which are field 11 and 41 .. Also there are like 3 spaces at the beginning.. Any Explanation or a another way to get it ?

Answer

I knew what can be done : We use ISOUtil.Hex2Byte(packagedMessage).. And the Full Representation will be generated.

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Answer