eBilled.bills.size()!=0}" sortBy="#{b.billType}">

                            <f:facet name="header">  
                                <h:outputLabel value="Purchase"/>
                            </f:facet>

                            <p:column headerText="Purchase No" >
                                <f:facet name="header">  
                                    <h:outputLabel value="Purchase No"/>
                                </f:facet> 
                                <h:outputLabel value="#{b.dep