Seam JSF EL Enhancement and s:link with RichFaces

[deved]

Hi. I'm using Jboss Seam-1.3.0.ALPHA and RichFaces. Here is the code:

<rich:tree switchType="ajax" value="#{menu}"
 var="item" nodeFace="#{item.type}" binding="#{menu.htmlTree}">
 <rich:treeNode type="leaf">
 <s:button value="#{item.text}" action="#{menu.redirect(item)}" style="padding: 0px; margin: 0px; color:black; background: white; border:0px;cursor: pointer;"/>
 </rich:treeNode>
</rich:tree>

The argument "item" is always null and none exception is throwing. If I replace the s:button with the s:link did not work at all.
This happens with RichFaces only.
I need help? thanks