FSM Perform DataRow Not Working

I’ve been trying to manually trigger the <perform_send_notification> perform method via XML but the data record doesn’t attach itself to the message.  Here is the XML I’m running:

<perform_send_notification>
  <parameters>
    <dataRow>
      <request>
         <request_id>1234567</request_id>
      <request>
    </dataRow>
    <distr_list_id>PART_ORDERS</distr_list_id>
    <message_name>ICN</message_name>
  </parameters>
</perform_send_notification>

I run this in the XML Poster and the email is sent, but it’s missing the Request information that I’m trying to pass to it.  I’ve also tried substituting a hierarchy_select statement within the dataRow parameter, but that also didn’t work correctly.

Can anyone provide some guidance on the proper syntax to fill into the dataRow parameter in order to connect the data to the message?