public function SetCaptchaCode($sid = false)
{
$max = count($this->arChars);
$this->code = "";
for ($i = 0; $i < $this->codeLength; $i++) {
$this->code .= $this->arChars[rand(1, $max) - 1];
}
$this->sid = $sid === false ? $this->Generate32RandomString() : $sid;
CCaptcha::Add(array("CODE" => $this->code, "ID" => $this->sid));
}