      <h:dataTable value="#{cc.attrs.controller.billItems}" var="bip" styleClass="items">
                                    <h:column >
                                        <h:outputLabel value="#{bip.item.printName}" style="margin: 4px;" />
                                        <h:panelGroup rendered="#{bip.billSession ne null }"  >
                                            <br/>

                                            <h:outputLabel value="Session No . " ></h:outputLabel>
                   