alternative rtf function for xsl function

Hi,

I am looking for an equivalent rtf function for the following:

<xsl:value-of  select="/PO_DATA/MESSAGE/MESSAGE_ROW/[MESSAGE='PO_FO_AGREEMENT_CANCELED'][1]/TEXT"/>

Is this possible in RTF?

My goal is to select a specific row from a list (based on the MESSAGE element):

<MESSAGE>

  <MESSAGE_ROW>

   <MESSAGE>PO_FO_ADJUSTED_AMT</MESSAGE>

   <TEXT>Adjusted Amount</TEXT>

  </MESSAGE_ROW>

  <MESSAGE_ROW>

   <MESSAGE>PO_FO_ADVANCE</MESSAGE>

   <TEXT>Advance:</TEXT>

  </MESSAGE_ROW>

  <MESSAGE_ROW>

   <MESSAGE>PO_FO_AGREEMENT_CANCELED</MESSAGE>

   <TEXT>This agreement CANCELED on</TEXT>

  </MESSAGE_ROW>

  <MESSAGE_ROW>

   <MESSAGE>PO_FO_AMOUNT_AGREED</MESSAGE>

   <TEXT>Amount Agreed</TEXT>