using var attribute with

[Raghu]

Hi, I just upgraded from struts2.0.8 to struts2.0.12 and used var attribute
for s:url tag..but it is giving below...I verified my app's  Web-inf/lib
directory and found struts2-core-2.0.12.jar is there. Am I missing
something?

Attribute var invalid for tag url according to TLD
    at
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
    at
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
    at
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:236)
    at
org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:986)
    at
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:706)

Here is my jsp code for this..

<li><a href="<s:url var="myFriendsTab" value="inviteFriends_input.action"/>"
title="Invite Friends"><span>Invite Friends</span></a></li>
    <li><a href="<s:url var="myFriendsTab"
value="importFriends_input.action"/>" title="Import Friends"><span>Import
Friends</span></a></li>
    <li><a href="<s:url var="myFriendsTab" value="myInvites_input.action"/>"
title="My Invites"><span>My Invites</span></a></li>