Hi there,
we would like to add a reltion OR about two field.
We can’t set it in admin panel so we try to integrate it by php.
In function.php we add this:

function filter_results( $query_args, $sfid ) {
	if($sfid==3981) {
	$query_args = array(
	    "meta_query" => array(
                    'relation' => 'OR',
                    array(
                        'key' => 'immobile_disponibile',
                        'compare' => 'NOT EXISTS',
                    ),
                    array(
                        'key' => 'immobile_disponibile',
                        'value' => '1',
                        'compare' => 'NOT LIKE',
                    ),
                ),
		"meta_key" => "immobile_disponibile",
		'orderby' => 'menu_order',
		"order" => "ASC",
             );	
	}
	return $query_args;
}
add_filter( 'sf_edit_query_args', 'filter_results', 20, 2 );

But… not work.