Look at the following code:
<h:selectOneMenu id="symbol" value="#{user.name}" >
<f:selectItem id="b" itemLabel="Symbol" itemValue="symbol" />
<f:selectItem id="a" itemLabel="Code" itemValue="code" />
<a4j:support event="onchange" reRender="re" action="#{user.getData}"/>
</h:selectOneMenu>
<h:selectOneMenu id="re" value="#{user.name}" >
<f:selectItems value="#{user.temp_list}" />
</h:selectOneMenu>
The problem is that my second selectOneMenu is not updating using Ajax4JSF call.