Recaptcha nor coreCaptcha seem to do anything

I entered a Captcha function in a form and it shows up fine in the front-end. But it doesn't do anything. If I enter after filling in a wrong code, or nothing at all for that matter, I still get the thanks message.
I attached a capture of the eventscreen, so you can see what I configured.

[attachment=0]chronoformscapture.jpg[/attachment]

Guess I forgot something...just can't figure out what.

Kind regards,
Saskia

Hi Dingens,

I learnt how to do this yesterday. You have to drag an 'Event Loop' Action to the 'Captcha | Fail' Event box.

Please see this thread. It's about ReCaptcha but the method is identical.

Bob