	//-----------
					$prev_date=array();
					$prev_expirys=$this->model_sale_order->getSubscriptionExpiryDate($this->request->post['customer_id']);
					$strprev_exp=$prev_expirys;
					foreach ($prev_expirys as $prev_expiry) {
						$strprev_exp=strtotime($prev_expiry);
						unset($strprev_exp);
						while(!strcmp($finalExpiryDate,$strprev_exp))
						{
							$finalExpiryDate=$finalExpiryDate+10;
						}
						$strprev_exp=$prev_expirys;	

					}
//-----------------------------
	public function getSubscriptionExpiryDate($customer_id){
		$query = $this->db->query("SELECT expire_date FROM ".DB_PREFIX."subscription WHERE customer_id = ".(int)$customer_id."");
		return $query->rows;
	}					