استفسار عن Populate

مرحبا,,,


عندي POPULATE_LIST_BY_QUERY في WHERE COUNTRY_CODE =:EMP_VISA_TICKETS.NATIONALITY_CODE
بيعطيfrm-41337 اذا كتبنا where

trigger on block level : when_new_record_instance

POPULATE_LIST_BY_QUERY('EMP_VISA_TICKETS.DEPARTURE_TOWN',
'SELECT TOWN_DESC,TO_CHAR(TOWN_CODE) FROM CMN.CMN_TOWNS [b]WHERE COUNTRY_CODE =:EMP_VISA_TICKETS.NATIONALITY_CODE[/b]
ORDER BY 1 ');