                 update=":#{p:resolveFirstComponentWithId('pTotals',view).clientId}"  />  

                                <p:ajax  event="rowUnselectCheckbox" process="tblFee" listener="#{staffPaymentBillController.performCalculations()}"   
                                         update=":#{p:resolveFirstComponentWithId('pTotals',view).clientId}"  />  

                                <p:ajax  event="toggleSelect" process="tblFee" listener="#{staffPaymentBillController.performCalculations()}"   
       