contact dorm 7 multiple actions

I have found this plugin for sending data to third party:
http://wordpress.org/plugins/forms-3rdparty-integration/

and this explenation of “REDIRECTING TO ANOTHER URL AFTER SUBMISSIONS”:
http://contactform7.com/redirecting-to-another-url-after-submissions/
If you put the following code on “Additional Settings” field

on_sent_ok: "location = 'http://example.com/';"

This works fine, but I am still wondering if there is simplest way than using the “3rd-Party Integration” plugin.

filter hook on “Twenty Thirteen” theme function.php – didn’t work for me:

add_filter('wpcf7_form_action_url', 'wpcf7_custom_form_action_url');
function wpcf7_custom_form_action_url()
{
    return 'http://domain.com/wheretopost';
}

any idea?
Is there any code or something to define inside cf7 admin edit screen itself?