   <p:column class="text-end" headerText="Returned" sortBy="#{b.refundAmount}" filterBy="#{b.refundAmount}" filterMatchMode="contains">
                                        <h:outputText value="#{b.refundAmount}">
                                            <f:convertNumber pattern="#,##0.00;(#,##0.00)" />
                                        </h:outputText>
                                        <f:facet name="footer">
                                            <h:outputText value="#{supplierPaymen