Problem with reCaptcha V2

Hello.I finally managed to integrate reCaptcha V2 into the form but now I have some problems verifying the captcha before the formular is send.Is there a way that if the captcha is wrong you can´t send the form?best regardsMarco -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.