I am trying to order blog posts by ‘city’ first and then order by ‘street_name’ within each city. I can’t seem to get the ‘street_name’ to display in alphabetical order. I am using WP_Query:

                <?php
                $args = array(
                    'post_type'=> 'property',
                    'meta_query' => array(
                                array(
                                    'relation' => 'AND' ,
                                    array(
                                        'meta_key' => 'city',
                                        'orderby' => 'meta_value',
                                        'order' => 'ASC'
                                    ),
                                    array(
                                        'meta_key' => 'street_name',
                                        'orderby' => 'meta_value',
                                        'order' => 'ASC'
                                    ),
                                )

),
Any ideas?