在customer_group_save_after事件中获取客户组详细信息

I am using customer_group_save_after_event and calling by observer method in that. I want to get all post data in that method. I tried this but it doesn't work.

    class Namespace_Customer_Model_Observer
    {
      public function setMinOrderPrice(Varien_Event_Observer $observer)
      {
        $data = $observer->getRequest()->getPost();
        echo "<pre>"; print_r($data); echo "</pre>";
        die("dede");

      }


}

Please Help

You could try:

Mage::app()->getRequest()->getParams();