             <h:outputLabel value="#{d.billItem.createdAt}">
                        <f:convertDateTime pattern="#{sessionController.applicationPreference.longDateFormat}"/>
                    </h:outputLabel>
                </p:column>

                <p:column headerText="Item Name">
                    <f:facet name="header">
                        <h:outputLabel value="Item Name" />
                    </f:facet>
                    <p:outputLabel value="#{d.billItem.item.name}" />
                 