title: How to convert int to string in Expression Language?
body: <p>I am working in XPages (JSF View controller).  In my DataTable, I want to create a html attribute <code>data-dmrkey="##"</code></p>
  
  <p>Here is the XML Markup on the page.  Builds fine.</p>
  
  <pre><code>&lt;xp:attr name="data-dmrkey" value="#{rowData.dmrkey}"&gt;&lt;/xp:attr&gt;
  </code></pre>
  
  <p>At runtime I get this message</p>
  
  <blockquote>
    <p>javax.faces.FacesException: java.lang.ClassCastException:
    java.lang.Long incompatible with java.lang.String
            javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:865)
            com.ibm.xsp.component.UIDataPanelBase.invokeOnComponent(UIDataPanelBase.java:416)</p>
  </blockquote>
  
  <p>Is there a Expression Language way to convert this primitive type to a String?</p>