Add variables from rewrite rules to query var

I wasn’t linking to the page correctly in the rewrite rules. The use of pagename was incorrect instead I should have used page_id. The rewrite rules I ended up using was

    add_rewrite_rule('^resa/start/?$', 'index.php?page_id=1897&route_page=start', 'top');
    add_rewrite_rule('^resa/planera/?$', 'index.php?page_id=1897&route_page=plan', 'top');
    add_rewrite_rule('^resa/dela/([^/]+)/?$','index.php?page_id=1897&route_page=share&share_id=$matches[1]', 'top');