Filter by serialized field

How To
1

I have a meta field for posts filled with serialized arrays. I’m trying to make it work with filter:

add_filter( 'bricks/query_filters_indexer/post/customField', function( $rows, $post, $filter_id, $filter_settings ) {
    // Generate index rows for custom logic
    $value = get_post_meta( $post->ID, 'otdelenie', true );

    if ( $value ) {
		foreach($value as $item) {
			$rows[] = [
            	'filter_id'            => $filter_id,
            	'object_id'            => $post->ID,
            	'object_type'          => 'post',
            	'filter_value'         => $item,
            	'filter_value_display' => get_post($item)->post_title,
            	'filter_value_id'      => 0,
            	'filter_value_parent'  => 0,
        	];
		}
    }

    return $rows;
}, 10, 4 );

But my filter still doesn’t show any value… Am i doing something wrong?