/**
  * @param string $value
  * @return void
  */
 public function isValid($value)
 {
     $captcha = new Captcha();
     $captcha->setPrivateKey($this->captchaSettings['secret']);
     if ($captcha->isValid() === FALSE) {
         $this->addError('Captcha is niet correct', 1231982309);
     }
 }