var fieldLookUp = search.lookupFields({
        type: 'vendorbill',
        id: bill_id,
        columns: ["file.created",'file.url']
      });

      log.debug("fieldLookUp",fieldLookUp);
      var date  = fieldLookUp["file.created"];
        var url = fieldLookUp['file.url'];
        log.debug("url",url);
        log.debug("date lookup field=",date);