I am running 6.3 CE. I have created a custom module named Jobs with a custom field named jobstatus. I would like to modify the Open Item search to search for Jobs not in "Completed" I have made the following change to searchfield.php file in the modules metadata directory.

Code:
'open_only' => array(
			'query_type'=>'default',
			'db_field'=> array('jobstatus'),
			'operator'=>'not in',
			'closed_values' => array('Completed'),
			'type'=>'bool',
		),
I am not sure why the code is not working, or whether I need to do something other than modifying this code. Any help would be appreciated.

Thanks!