Hi,
I'm new to seam and jsf and I have written a very simple page. In the page I have added a a4j command button which is supposed to call a method of the page. However, no method is called after the click is performed. I tried to see if the AJAX request is sent at all using firebug but no request is generated.

The view:

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.org/rich"
 xmlns:a4j="http://richfaces.org/a4j"
 template="layout/template.xhtml">

<ui:define name="body">

 <rich:panel>
 <div class="results"><h:outputText
 value="hmm, something's not right"
 rendered="#{empty reactionList}" />
 <rich:dataTable
 id="reactionList" var="simpleReaction"
 value="#{reactionList}"
 rendered="#{not empty reactionList}">

 // ..columns and headers

 <rich:column>
 #{simpleReaction.processedMaterial.sellPrice}
 <a4j:commandButton action="#{simpleReactionList.zxy}" value="abcd" />
 </rich:column>
 </rich:dataTable>
 </div>
 </rich:panel>
</ui:define>

</ui:composition>

SimpleReactionList.java:

@Name("simpleReactionList")
public class SimpleReactionList {

@Logger
private Log log;

@In(value = "entityManager")
private EntityManager em;

@In
StatusMessages statusMessages;

@DataModel
private List<SimpleReaction> reactionList;

@Factory("reactionList")
public void simpleReactionList() {
 log.info(getClass() + " initialized");
 List<ProcessedMaterial> processedMaterialList = em.createQuery("select m from ProcessedMaterial m").getResultList();
 reactionList = new ArrayList<SimpleReaction>();
// do some other stuff

}

public void zxy() {
 log.info("--------------------------------------------------------------------------");
 log.info("--------------------------------------------------------------------------");
}
}

All the data displays perfectly. Only the ajax request doesn't go out.
Could someone give me an idea as to what i'm doing wrong? This is just a test app i'm writing to understand seam, jsf and richfaces.