          <f:facet name="header">
                                        <h:outputLabel value="Value"/>
                                    </f:facet>
                                    <h:outputLabel value="#{i.pharmaceuticalBillItem.itemBatch.purcahseRate * i.pharmaceuticalBillItem.qty}"  >
                                        <f:convertNumber pattern="#,##0.00" ></f:convertNumber>
                                    </h:outputLabel>                                  
                                <