Dynamic Rendered - null value in Managed Bean

[sinvaldo]

Hello dear friends,

I have a difficult problem that i couldn't not find a workaround yet.

I have a SelectOneRadio :

<h:outputLabel value="Tipo Erosão:" styleClass="label" />
                                        <h:selectOneRadio id="radio_tipo_ocorr" value="#{ocorrenciaMB.joe}"
                                                  valueChangeListener="#{ocorrenciaMB.exibirTipoErosaoAjax}"
                                                  styleClass="radioOption">
                                                  <a4j:ajax event="valueChange" render="panel_dinamico"/>
                                                  <f:selectItems value="#{ocorrenciaMB.radioTipoErosao}" />
                                        </h:selectOneRadio>
                              <rich:message for="radio_tipo_ocorr" />

and a outputPanel that is rendered dynamically:

<a4j:outputPanel id="panel_dinamico" layout="block">
                                        <a4j:outputPanel id="panel_rendered"
                                                  rendered="#{ocorrenciaMB.tipoErosaoFlag}" layout="block">
                                                  <h:outputLabel value="Frequência: " styleClass="label" />
                                                             
                                                  <h:outputLabel value="Ocasional" styleClass="radioOption" />
                                                  <h:inputText id="txt_ocasional"
                                                            value="#{processoMB.ocorrenciaCorrente.qtdeOcasional}" size="4" />


                                                  <h:outputLabel value="Frequente" styleClass="radioOption" />
                                                  <h:inputText id="txt_frequente"
                                                            value="#{processoMB.ocorrenciaCorrente.qtdeFrequente}" size="4" />


                                                  <h:outputLabel value="Muito Frequente" styleClass="radioOption" />
                                                  <h:inputText id="txt_muito_frequente"
                                                            value="#{processoMB.ocorrenciaCorrente.qtdeMuitoFrequente}"
                                                            size="4" />
                                        </a4j:outputPanel>
                              </a4j:outputPanel>

but the values are "null" in Managed Bean, Somebody can help me ?

Thanks