xml - XSLT transforming data using choose -

i have xml document, want use xslt change formatting of data.

xml values

<uniquename>xxx</uniquename> <parent>xyz</parent> <name>abc</name> 

anytime there xxx in uniquename want change uniquename value 123

i tried below seems add column xml rather transforming xxx 123

 <th style="text-align:left">uniquename</th>  <th style="text-align:left">parent</th>  <th style="text-align:left">name</th>   </tr>  <xsl:for-each select="units/row">  <tr>    <review>   <td><xsl:value-of select="uniquename"/></td>   <xsl:if test="uniquename= 'xxx'"><text>123</text>   </xsl:if>    </review>  

what need change values want

as title says, need use xsl:choose, rather xsl:if. try way:

<xsl:for-each select="units/row">     <tr>         <td>             <xsl:choose>                 <xsl:when test="uniquename='xxx'">                     <xsl:text>123</xsl:text>                  </xsl:when>                 <xsl:otherwise>                     <xsl:value-of select="uniquename"/>                 </xsl:otherwise>             </xsl:choose>         </td>          <!-- more cells ... -->     </tr>    </xsl:for-each> 

note difference between <text> , <xsl:text>. , not sure why need <review> element in middle of table.