JSTL tags don't evaluate if I import -

i use dynamic include on page:

<div class="top"> <jsp:include page="header.jsp"/> </div>

this important part in header.jsp:

<h4> jstl tag test: </br>   <c:if  test="${sessionscope.username != null}" >   <c:out value="hello, ${sessionscope.username}"/>   </c:if> </h4>

the result on main page source is:

<h4> jstl tag test: </br>   <c:if  test=swank != null >   <c:out value="hello, swank"/>  </c:if> </h4>

i use this: <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> in main page.

does know how can use jstl if import page?

thanks, zoltán

add same declaration

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

into header.jsp file.

Detect