City or post code in

$meta_query = array(
	'relation' => 'OR',
	array(
		'key'     => 'mvc_institution_address_city',
		'value'   => '$city',
		'compare' => 'IN',
		'type'    => 'CHAR',
	),
	array(
		'key'     => 'mvc_institution_address_postcode',
		'value'   => '$postCode',
		'compare' => 'IN',
		'type'    => 'CHAR',
	),
);