无法在joomla 3中命中onUserBeforeSave事件

用户文件中的我的代码-

我正在努力 onUserBeforeSave公司 ,但在此事件中,Joomla代码被执行,控制不到我的代码:

class PlgUserotp extends JPlugin
{

 public function onUserBeforeSave($oldUser,$isnew,$newuser)
    {

       $errors = NULL;
        $phone_number = NULL;

        foreach ($newuser as $key => $value)
        {

            if($key=="username")
                $username = $value;
            elseif ($key=="email1") 
                $email = $value;
            elseif ($key=="password1") 
                $password = $value;
            else
                $extra_data[$key]=$value;
        }
            //echo $username . $email .$password; 

    $this->startVerificationProcess($username,$email,$errors,$phone_number,$password,$extra_data);
    //MoCurlOTP::mo_send_otp_token('EMAIL',$newuser["email1"],'');

    }
}