I have a use case very similar to the continent/country fields in the ui example, and try to add ajax: The selectItems list for countries should be updated and rerendered when the user selects a continent. I tried the straightforward approach: | <s:decorate template="decorateField.xhtml"> | <ui:define name="label">Continent of Birth</ui:define> | <h:selectOneMenu value="#{personHome.instance.continent}" required="true" id="continent"> | <s:selectItems value="#{continents.resultList}" var="continent" label="#{continent.name}" noSelectionLabel="Please Select..."/> | <s:convertEntity /> | <a:support event="onchange" reRender="countrySelect" /> | </h:selectOneMenu> | </s:decorate> | | <s:decorate template="decorateField.xhtml"> | <ui:define name="label">Country of Birth</ui:define> | <h:selectOneRadio id="countrySelect" value="#{personHome.instance.country}" required="true" disabled="#{empty person.continent}"> | <s:selectItems value="#{personHome.instance.continent.countries}" var="country" label="#{country.name} (#{country.continent.name})" noSelectionLabel="Please Select..." hideNoSelectionLabel="true"/> | <s:convertEntity /> | </h:selectOneRadio> | </s:decorate> | (and a lot more), but nothing worked, the country selection is not rerendered. Can anybody help, please? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4121245#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...