[Plugin: Contact Form 7] Messages not showing on submit

Hello guys!

When a user submits the form, they dont get any message that their submission went through, it just clears the fields (and sends the form to the admin).

The form acts perfectly as long as i don’t add on_sent_ok action hook to “Additional Settings” (I need to track form submission as an event).
I see the green box with the message of successfull submission as well as i receive emails.

But if i add this action hook, i still receive emails but i don’t see a confirmation of it being sent.

This is how the on_sent_ok hook looks like:
on_sent_ok: “_gaq.push([‘_trackEvent’, ‘Запрос online’, ‘Отправить’, ‘russian CF’ ]);”

The form is right at the bottom of this page (it’s in Russian): http://sayagyi-u-ba-khin.net/russia/

Could you please help me?

Thank you.