Why would the statement:

<c:url value="Questions" var="url"><c:param name="type" value="${tag}" /></c:url>

not output any thing?

I am working on homework 4... I set up the controller to gather information from the database and create the same question list that existed from the previous assignment... Now however, for some reason there is no URL being output by the above line... It is not the "${tag}" because it still outputs the name of all of the tags it just sets there href to an empty string...

<td><c:forEach items="${question.tags}" var="tag">
                    <a href='<c:url value="Questions" var="url"><c:param name="type" value="${tag}"/></c:url>'>
                    <c:out value="${tag}" escapeXml="true"/></a> </c:forEach></td>