post-type custom permalink rewrite

i want to edit post type link to be like this:

site.com/news/entry-post-title

witch “entry-” as static prefix before post title of posts of the post type “news”

i tried to use this:

function wptuts_custom_tags() {
        add_rewrite_rule("news/entry-([^/]+)(/[0-9]+)?", 'index.php?post_type=news&news=$matches[1]&name=$matches[2]','top');
    }
    add_action('init','wptuts_custom_tags');

it works when i add “entry-” to links manually, but the perma link doesn’t echo the new structure , it echo the basic structure site.com/news/post-title

how to make permalink echo the desired structure?

(note: posttype registered by plugin “types”)

Thanks

[ Please do not bump, that’s not permitted here. ]