title: Passing expressions to custom tags in JSP
body: <p>Hi I just created  custom tag being used in my JSP
  The .tld of the tag is something like this</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;taglib&gt;
  &lt;tlibversion&gt;1.0&lt;/tlibversion&gt;
  &lt;jspversion&gt;1.1&lt;/jspversion&gt;
  &lt;shortname&gt;acma&lt;/shortname&gt;
  &lt;info&gt;AccountManag&lt;/info&gt;
  &lt;tag&gt;
      &lt;name&gt;clookup&lt;/name&gt;
      &lt;tagclass&gt;taglib.acm&lt;/tagclass&gt;
      &lt;info&gt;Customer Lookup&lt;/info&gt;
      &lt;attribute&gt;
        &lt;name&gt;cust_id&lt;/name&gt;
        &lt;required&gt;true&lt;/required&gt;
      &lt;/attribute&gt;
  &lt;/tag&gt;
  &lt;/taglib&gt;
  </code></pre>
  
  <p>Now the tag works great when i use it with an int value like so
  cust_id="1"</p>
  
  <pre><code>  &lt;dd:clookup cust_id="1"&gt;&lt;/dd:clookup&gt;
  </code></pre>
  
  <p>but it doesnt work when i use EL .with it like</p>
  
  <pre><code> &lt;dd:clookup cust_id="${sessionScope.cust.id}"&gt;&lt;/dd:clookup&gt;
  </code></pre>
  
  <p>All the tutorials start of with int or other data type so i cant locate any resource that might help here.. any suggestions ?</p>