protected function getClientScriptOptions()
{
$options = parent::getClientScriptOptions();
$control = $this->findCaptchaControl();
if ($control->getCaseSensitive()) {
$options['TokenHash'] = $this->generateTokenHash($control->getToken());
$options['CaseSensitive'] = true;
} else {
$options['TokenHash'] = $this->generateTokenHash(strtoupper($control->getToken()));
$options['CaseSensitive'] = false;
}
return $options;
}