Primefaces-Ajax命令按钮

Question

I have a problem , ajax the way it is in the low code does not call the exampleController.include( ) Someone can tell me what I'm doing wrong ?

         <h:form id="exampleForm">

            <p:panel toggleable="true" id="pgInfo">

               <h:panelGrid columns="2" cellpadding="2">
                  <p:inputMask value="" id="val"/>
               </h:panelGrid>

               <h:panelGrid columns="3" cellpadding="3">
                  <p:commandButton icon="ui-icon-disk" 
                    value="Add"
                    actionListener="#{exampleController.include()}" 
                    ajax="true" update="dataTable" process="pgInfo"/>  
               </h:panelGrid>

            </p:panel>

            <p:panel toggleable="true" id="panelTable" >
               <h:panelGrid columns="1" cellpadding="1">
                  <p:dataTable id="dataTable">

                     ...

                  </p:dataTable>
            </h:panelGrid>
        </p:panel>

     </h:form>