struts2 if condition with property or tiles-attribute doesnt work - iterator

Question

i have problems with my if condition using struts 2.
I have a tiles-definition using a put-list-attribute with list-attributes as menuitems.
In my menu.jsp i iterate over the put-list to render all my menuitems.
Now i try to check if the value of my item contains a special character.
Here is my code:
tiles.xml
<definition name="start.menu" template="/WEB-INF/menu.jsp" >
<put-attribute name="title" value="Hauptmenu" />
<put-list-attribute name="webThemes" >
<add-list-attribute>
<add-attribute value="Test" id="name"/>
<add-attribute value="atest" />
</add-list-attribute>
<add-list-attribute>
<add-attribute value="System Test"/>
<add-attribute value="test" />
</add-list-attribute>
</put-list-attribute>
</definition>
menu.jsp
<%# taglib prefix="s" uri="/struts-tags" %>
<%# taglib uri="/tiles-jsp" prefix="tiles" %>
<%# taglib uri="/tiles-extras-jsp" prefix="tilesx" %>
<%-- Push tiles attributes in page context --%>
<tiles:importAttribute />
<tilesx:useAttribute id="list" name="webThemes" classname="java.util.List" />
<table class="menu" border="0px" width="100%" cellspacing="0px" cellpadding="0px" >
<s:iterator value="#attr.webThemes" var="item">
<s:if test="%{#item.value[1].contains('a')}">
<s:set var="link" value="111"/>
</s:if>
<s:else>
<s:set var="link" value="#item.value[1]"/>
</s:else>
<tr>
<td valign="top" >
<font size="-1">
<a href="<s:property value="#link"/>"
class="menu">
<s:property value="#item.value[0]" />
<s:property value="#item.value[1]" />
</a>
</font>
</td>
</tr>
</s:iterator>
But the condition is always false.
I tried different approaches but nothing worked:
<s:if test="%{#item.value[1].contains('a')}">
<s:if test="#item.value[1].contains('a')">
<s:if test='%{#item.value[1].contains("a")}'>
<s:set var="itemvalue" value="#item.value[1]"/>
<s:property value="itemvalue"/>
<s:if test='%{#itemvalue.contains("a")}'>
<s:if test='#itemvalue.contains("a")'>
<s:if test='%{#item.value[1] == "atest"}'>
So how can i get the condition working? What am i doing wrong?
Thanks!!!

Answer 1

Ok... i tried 2 days until i posted my question.
but after posting a found a working solution in an hour...:
<s:if test='(#item.value[1].value).startsWith("a")'>