Message Mapping Context question

Hi experts,

Trying to map IDoc to a JDBC structure, I'm facing the following situation:

Source structure:

   <IDOC BEGIN="1">
      <E1EDKA1 SEGMENT="1">
         <PARVW>RG</PARVW>
         <PARTN>805A</PARTN>
      </E1EDKA1>
      <E1EDKA1 SEGMENT="1">
         <PARVW>WE</PARVW>
         <PARTN>999A</PARTN>
      </E1EDKA1>
      <E1EDP01 SEGMENT="1">
         <POSEX>000010</POSEX>
         <E1EDPA1 SEGMENT="1">
            <PARVW>RG</PARVW>
            <PARTN>805B</PARTN>
         </E1EDPA1>
         <E1EDPA1 SEGMENT="1">
            <PARVW>WE</PARVW>
            <PARTN>999B</PARTN>
         </E1EDPA1>
      </E1EDP01>

Mapping:

[http://img695.imageshack.us/img695/3269/screenhunter011.png]

I expect the 999B as a result in the target field.

Why am I getting 805B instead?

Tks!