                             </h:outputLabel>
                                        </f:facet>
                                    </p:column>
                                </p:row>  
                            </p:columnGroup>  

                        </p:dataTable>

                        <p:spacer height="30"/>

                        <p:dataTable id="cancelled"  value="#{commonReport.grnCancelled.bills}" var="b1"  
                                     rendered="#{commonReport.grnCancelled.bills