[RESOLVIDO] Porque o AJAX nao atualiza o campo?

Front-end
#1

pessoal tou com o seguinte problema…
tenho 2 <h:selectOneMenu> …
quando seleciono algo do primeiro <h:selectOneMenu>, queria que atualizasse o segundo <h:selectOneMenu>
nao sei porq nao ta atualizando…alguem tem uma ideia?

<?xml version="1.0" encoding="ISO-8859-1"?>
	<html xmlns:jsp="http://java.sun.com/jsp/page"
		xmlns:h="http://java.sun.com/jsf/html"
		xmlns:f="http://java.sun.com/jsf/core"
		xmlns:ui="http://java.sun.com/jsf/facelets"
		xmlns:rich="http://richfaces.org/rich"
		xmlns:a4j="http://richfaces.org/a4j"
		xmlns:fn="http://java.sun.com/jstl/core">
		<ui:composition template="../template/template.jspx">	
			<ui:define name="conteudo">
	<body>

<f:view>
<a4j:form >
	<h:panelGrid id="coisa" columns="2">
		<f:facet name="header">
			<h:outputText value="Funcionarios:" />
		</f:facet>
		
		<h:column>
			<h:outputText value="Departamento:" />
			<h:selectOneMenu id="testeA" value="#{usuarioBean.usuarioForm.tipoUsuario}">
				<f:selectItems value="#{usuarioBean.tiposUsuarios}" />
				<a4j:support event="onchange" reRender="coisa,testeA,testeB" action="#{usuarioBean.carregaCombosAtualizarUsuario}" />
			</h:selectOneMenu>
		</h:column>
		<h:column>
			<h:outputText value="Funcionário:" />
			
			<h:selectOneMenu id="testeB">
				<f:selectItems value="#{usuarioBean.usuariosCadastrados}"/>
			</h:selectOneMenu>
		</h:column>
	</h:panelGrid>

</a4j:form>

	</f:view>
	</body>
	</ui:define>
	</ui:composition>
</html>
#2

como aki eu sei que o pessoal tentou ajudar e ninguem conseguiu…resolvi tentar sozim e achei o erro…acontece que estou usnado facelets …e meu rodapé estava assim:

<?xml version="1.0" encoding="ISO-8859-1"?>
	<html xmlns:jsp="http://java.sun.com/jsp/page"
		xmlns:h="http://java.sun.com/jsf/html"
		xmlns:f="http://java.sun.com/jsf/core"
		xmlns:ui="http://java.sun.com/jsf/facelets"
		xmlns:rich="http://richfaces.org/rich"
		xmlns:a4j="http://richfaces.org/a4j"
		xmlns:fn="http://java.sun.com/jstl/core">

 <table width="100%" border="0" cellspacing="1" cellpadding="0" bgcolor="#228B22">
        <tr>
          <td>
            <table width="100%" border="0" cellspacing="0" cellpadding="0">
              <tr>
                <td width="0%" height="18" class="texto"></td>
                <td width="4%" class="texto">
                  <div align="right"><a href="#topo"><img src="../../imagens/top.gif" alt="Ir para o topo da pagina" width="18" height="18" border="0"/></a></div>
                </td>
              </tr>
            </table>
            <table width="100%" border="0" cellspacing="0" cellpadding="0">
              <tr>
                <td bgcolor="#006400">
                  <div align="center" class="texto_simples"><font color="#FFFFFF">
                  <font size="1">
                    <span class="texto_simples">
                        Desenvolvido por Diego Mendes e Fabio Batista 2010-2011
                    </span>
                  </font></font></div>
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
 </html>

resolvi tirar o trecho [b]

<?xml version="1.0" encoding="ISO-8859-1"?> 
<html xmlns:jsp="http://java.sun.com/jsp/page"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:ui="http://java.sun.com/jsf/facelets"
	xmlns:rich="http://richfaces.org/rich"
	xmlns:a4j="http://richfaces.org/a4j"
	xmlns:fn="http://java.sun.com/jstl/core">[/b]

e funcionou que foi uma maravilha, espero que sirva para alguem no futuro…
XD

#3