hi Ilya and thanks 4 your answer, ok, i used the value for obtain the day and the month and all is fine, but here ir another question i´ve add another column beacause when i try to do the getDatExpDate from de bean ActProdBean is null, i think is because the actProdItem.datExpDate is inside from the lstActCampDetail, so i´ve create another property Broker.dateCalendarChange and the getDateCalendarChange work very well.

but how can I obtain the value from the actProdItem.datExpDate

the code with the new colum:

<rich:dataTable  id="actProdData" var="actProdItem"  value="#{ActProdBean.lstActCampDetail}">

    <h:column>
         <f:facet name="header">
            <h:outputText  value="Expiration Date"/>
        </f:facet>
             <rich:calendar  id="calendarProd" datePattern="dd/MM/yyyy"  value="#{actProdItem.datExpDate}" >
                           <a4j:support event="onchanged"  action="#{OrganizerBean.upDateProdDetail}" reRender="actProdData" />
             </rich:calendar>

    </h:column>

     <h:column>
            <f:facet name="header">
                 <h:outputText value="Change Expiration Date"/>
              </f:facet>
                          <rich:calendar value="#{Broker.dateCalendarChange}" datePattern="dd/MM/yyyy">
                               <a4j:support event="onchanged" action="#{OrganizerBean.upDateProdDetail}">
                                   <f:param name="idActivity" value="#{actProdItem.lstActId}"></f:param>
                               </a4j:support>
                       </rich:calendar>
     </h:column>

</rich:dataTable>

thanks Ilya

Another point. when the the list in rich:dataTable bring me more than one row i can´t obtain the value from the bean, only the last row obtain the value from the date selected, but the first, second... don´t do it

hi again Ilya, i used the <a4j:support... but the value of the valueChangeListener is null yet   i dont found my error. how i can obtain the date select???

here is my calendar

                <rich:dataTable id="actProdData" var="actProdItem" value="#{ActProdBean.lstActCampDetail}" headerClass="textHeader" rows="8">

                    <h:column>
                       <f:facet name="header">
                          <h:outputText value="Change Expiration Date"/>
                       </f:facet>
                       <rich:calendar value="#{actProdItem.datExpDate}" datePattern="dd/MM/yyyy" >
                           <a4j:support event="ondateselect" actionListener="#{OrganizerBean.upDateProdDetail}"></a4j:support>   
                       </rich:calendar>
                   </h:column>
                 </rich:dataTable>

here is my method:

public void upDateProdDetail(ActionEvent event) throws Exception {   
        System.out.println("get the event for the component");
    }

the  result when i debug

i used <a4j:support... because valueChangeListener dont trigger the method

<rich:calendar value="#{actProdItem.datExpDate}" datePattern="dd/MM/yyyy" valueChangeListener="#{OrganizerBean.upDateProdDetail}">

public void upDateProdDetail(ValueChangeEvent event) throws Exception {   

        System.out.println("Method ");

    }