title: How to write xslt if element contains letters?
body: <p>Sth should be all letters or in regular expressions [A-Z]. How to combine xslt with regular expressions? </p>
  
  <pre><code> &lt;xsl:if test="string-contains(//ns0:elem/value, 'sth')"&gt;
  
  
          &lt;/xsl:if&gt;
  </code></pre>