Search by Element and print RANum and position()

XML:

<InvoiceAdj>
  <RAInfo RANumType="79">
     <RANum>RANumType_79</RANum>
  </RAInfo>
  <RAInfo RANumType="82">
     <RANum>RANumType_82</RANum>
  </RAInfo>
  <RAInfo RANumType="85">
     <RANum>RANumType_85</RANum>
  </RAInfo>
  <RAInfo RANumType="88">
     <RANum>RANumType_88</RANum>
  </RAInfo>
  <RAInfo RANumType="79">
     <RANum>RANumType_79_1</RANum>
  </RAInfo>
  <RAInfo RANumType="82">
     <RANum>RANumType_82_1</RANum>
  </RAInfo>
  <RAInfo RANumType="85">
     <RANum>RANumType_85_1</RANum>
  </RAInfo>
  <RAInfo RANumType="88">
     <RANum>RANumType_88_1</RANum>
  </RAInfo>
</InvoiceAdj>

XSLT: Search by attribute RANum = 'RANumType_88'

<xsl:for-each select="InvoiceAdj/RAInfo">
<xsl:choose>
  <xsl:when test="RANum = 'RANumType_88'">
    <tr>
      <td><xsl:value-of select="RANum"/></td>
      <td><xsl:value-of select="position()"/></td>
      <td></td>
    </tr>
  </xsl:when>
</xsl:choose>                
</xsl:for-each>

HTML:

<tr>
<td>RANumType_88</td>
<td>4</td>