I'm trying to hide a field on the detail form using xsl. I have tried the following, and I'm pretty sure it should work, but it doesn't. The concept is that when listing the details: if the Description field is empty then skip it. Of course, if it does have content then print it.

<xsl:choose>
    <xsl:when test="Description !=''">
      <tr>
        <td colspan="4">
          <b>Description: </b>
          <br />
          <xsl:value-of select="udt:Description" disable-output-escaping="yes" />
        </td>
      </tr>
    </xsl:when>
</xsl:choose>

Thanks for any suggestions offered.