intButton"  >
                                <p:dataExporter type="xlsx" target="tb" fileName="Doctor_Payment"  />
                            </p:commandButton>
                        </p:panel>
                        <p:panel id="gpBillPreview">
                            <p:panelGrid columns="3" style="width: 100%;" styleClass="alignTop">
                                <p:dataTable id="tb1" value="#{inwardStaffPaymentBillController.docPayListDischarged}" var="bf" >

                                 