Problem with the user-defined message search in PI 7.3.1

Hi, all

I having been trying out the new user-defined message search in PI 7.3.1(with TREX). I am stuck on creating the search critera section and could not move forward. Here is how I define the filter:

Here is a sample payload:

  <?xml version="1.0" encoding="utf-8" ?>

  <ns:JOB_MT xmlns:ns="urn:peoplesoft:batch:job_r:message">

    <MsgData>

      <JOB>

         <ACTION_FLAG>NewPerson</ACTION_FLAG>

         <EMPLID>XXXXX</EMPLID>

         <REG_NO />

         <LAST_NAME>XXXX</LAST_NAME>

         <FIRST_NAME>XXXX</FIRST_NAME>

       .................

      </JOB>

    </MsgData>

  </ns:JOB_MT>

I have tried the xpatch search criteria as the following:

/ns:JOB_MT/MsgData/JOB/EMPLID

/ns:JOB_MT xmlns:ns="urn:peoplesoft:batch:job_r:message"/MsgData/JOB/EMPLID

Both failed to return the emplid field when I clicked on the "test search criteria" against a PI message. Can you advise what I did wrong?

Thanks,

Jonathan.