To get individual fields from an object retrned by search.lookupField()

it is the code to get value of fields individually from an object which is returned by the search.lookupField()

const curRec = scriptContext.currentRecord;   

    let cusName = curRec.getText({         

  fieldId: ‘entity’ 

      });     

  let cusId = curRec.getValue({   

        fieldId: ‘entity’       

});     

  let cusSearch = search.lookupFields({   

        type : search.Type.CUSTOMER,       

    id : cusId,       

    columns: [‘overduebalance’,’companyname’]   

    });         

      let balanceDue = cusSearch.overduebalance; 

   let cusName = cusSearch.companyname;

  log.debug(‘Customer,overdue Balance’, balanceDue + ‘ ‘ + cusName);