Hi @kmeronuk
This feature isn’t documented yet (maybe because it isn’t perfect yet), but I believe you can use it. Please use it at your own risk.
function my_post_object_query( $args, $field, $post )
{
// modify the order
$args['meta_key'] = 'user_meta_key';
$args['meta_value'] = 'user_meta_value';
return $args;
}
// filter for every field
add_filter('acf/fields/user/query', 'my_post_object_query', 10, 3);
I hope this helps.