protected function _afterload()
 {
     if (!is_array($this->getValue())) {
         $this->setValue(explode(",", $this->getValue()));
     }
     return parent::_afterload();
 }
 protected function _afterload()
 {
     parent::_afterload();
     $rule = Mage::getModel('hipay/rule');
     $rule->setMethodCode($this->_getMethodCode());
     if ($this->getValue()) {
         $rule->load($this->getValue());
     }
     if ($rule->getConfigPath() == "") {
         $rule->setConfigPath($this->_getConfigPath());
     }
     $this->setRule($rule);
     return $this;
 }