A snippet of my productHandler bean

@DataModel
private List<Products> listProduct;

@DataModelSelection("listProduct")
private Product selectedProduct;

a snippet of my xhtml page

<rich:dataTable value="listProduct" var="list">
<f:facet name="header">
                              <rich:columnGroup>
                                        <h:column>
                                             <h:outputText value="#{messages.serial}" />
                                        </h:column>
                                        <h:column>
                                             <h:outputText value="#{messages.productname}" />
                                        </h:column>
                                        <h:column>
                                             <h:outputText value="#{messages.productdescription}" />
                                        </h:column>
                                        <h:column>
                                             <h:outputText value="#{messages.productprice}" />
                                        </h:column>
                                        <h:column>
                                             <h:outputText value="#{messages.productquantity}" />
                                        </h:column>
                                        <h:column>
                                             <h:outputText value="#{messages.productcategory}" />
                                        </h:column>          
                                        </rich:columnGroup>                    
                              </f:facet>
                              <h:column>
                                   <h:outputText value="#{list.serial}" />
                              </h:column>
                              <h:column>
                                   <h:outputText value="#{list.name}" />
                              </h:column>
                              <h:column>
                                   <h:outputText value="#{list.description}" />
                              </h:column>
                              <h:column>
                                   <h:outputText value="#{list.price}" />
                              </h:column>
                              <h:column>
                                   <h:outputText value="#{list.quantity}" />
                              </h:column>
                              <h:column>
                                   <rich:dataTable id="listproducts1" rows="50" columnClasses="col"
                              value="#{list.categories}" var="listcats">
                                   <h:column><h:outputText value="#{listcats.name}"/></h:column>
                                   </rich:dataTable>
                                   
                              <a4j:commandLink value="#" id="link" action="#{productHandler.showSelected1}"
                              oncomplete="Richfaces.showModalPanel('panel');">
        Delete
        
    </a4j:commandLink>
                              </h:column>
          

</rich:DataTable>

  <rich:modalPanel id="panel" width="350" height="100">
        <f:facet name="header">
            <h:panelGroup>
                <h:outputText value="Modal Panel"></h:outputText>
            </h:panelGroup>
        </f:facet>
        <f:facet name="controls">
            <h:panelGroup>
                <h:outputText value="test" styleClass="hidelink" id="hidelink"/>
                <rich:componentControl for="panel" attachTo="hidelink" operation="hide" event="onclick"/>
            </h:panelGroup>
        </f:facet>
        <h:outputText value="#{messages.productname} : #{selectedProduct.name}"/><br/>
        <h:outputText value="#{messages.deleteproductconfirmation}"/>
        <a4j:commandButton value="Yes" onclick="RichFaces:component('panel')}.hide()"/> <a4j:commandButton value="No" onclick="rich:component('panel')}.hide()"/> 
    </rich:modalPanel>

in the modalPanel the product name is always empty...why is that?how can I display the selected product in the modalpanel?