When you allow multiple values the values saved is no longer a single text value. Instead it is stored in the DB as a serialized array. You need to alter the meta query, you can see an example of the meta query and it would work the same as the meta query here http://www.advancedcustomfields.com/resources/querying-relationship-fields/#single-location.php. See that page for an explanation of this code.
meta_query = array(
array(
'key' => 'type',
'value' => '"'.$type.'"',
'compare' => 'LIKE'
)
)