Registerkarte "ändern" aus Backing-bean mit JSF 2.0

Ich möchte Registerkarte ändern aus backing-bean , wie kann ich das tun?

<h:form id=form>  

    <p:growl id="growl" showDetail="true" />  

    <p:tabView id="tabView" dynamic="true" widgetVar="detailsTab">  

        <p:ajax event="tabChange" listener="#{bean.onTabChange}" update=":form:growl"/>  

        <p:tab title="Tab1" id="emp">  
            <h:panelGrid columns="2" cellpadding="10">  


              </h:panelGrid>  
        </p:tab>  

        <p:tab title="Tab 2 " id="schedule1">  
            <h:panelGrid columns="2" cellpadding="10">  


            </h:panelGrid>  



        </p:tab>  

        <p:tab title="Tab 3" id="schedule2">  
        <p:schedule value="#{bean.eventModel}" slotMinutes="15" 
                            resizable="false" widgetVar="schdule" initialDate="#{bean.dates}" draggable="true" styleClass="#{bean.selDates}"
                             >
                             <p:ajax event="dateSelect" listener="#{bean.onDateSelect}"
                                update="dialogBox"  oncomplete="patScheduleDialog.show()"/>
                              <p:ajax event="eventSelect" listener="#{bean.onEventSelect}" 
                                update="dialogBox :form:growl" oncomplete="#{bean.pevent}"/>
                                <p:ajax event="eventMove" listener="#{bean.onEventMove}"
                                update="dialogBox, :form:growl" />
                        </p:schedule>

         <p:dialog id="dialogBox" header="Patient's Appointment Details" widgetVar="patScheduleDialog" resizable="true"  
                                 showEffect="explode" hideEffect="explode">  

                <h:panelGrid id="eventDetails" columns="2">  
            <h:outputLabel for="title" value="Title:" />  
            <p:inputText id="title" value="#{bean.event.title}" required="true"/>  

            <h:outputLabel for="from" value="From:" />  
            <p:inputMask id="from" value="#{bean.event.startDate}" mask="99/99/9999">  
                <f:convertDateTime pattern="dd/MM/yyyy" />  
            </p:inputMask>  

            <h:outputLabel for="to" value="To:" />  
            <p:inputMask id="to" value="#{bean.event.endDate}" mask="99/99/9999">  
                <f:convertDateTime pattern="dd/MM/yyyy" />  
            </p:inputMask>  

            <h:outputLabel for="allDay" value="All Day:" />  
            <h:selectBooleanCheckbox id="allDay" value="#{bean.event.allDay}" />  

            <p:commandButton type="reset" value="Reset" />  
            <p:commandButton value="Save" actionListener="#{bean.addEvent}" oncomplete="schdule.update();dialogBox.hide();"/>  
        </h:panelGrid>  


    </p:dialog>


        </p:tab>  

    </p:tabView>  


  public void onEventSelect(ScheduleEntrySelectEvent selectEvent){

    //what should I need to do here to set "Tab 2" if click on any event.


    }