recuperer characteristic_value et prix dans l'email

$cartProduct = array(
			'PRODUCT_CODE' => $item->order_product_code,
			'PRODUCT_QUANTITY' => $item->order_product_quantity,
			'PRODUCT_IMG' => '',
			'item' => $item,
			'product' => $product,
			['CHARACTERISTIC_VALUE'] => $item->order_product_options[0]->characteristic_value; 
		);

a:2:{i:0;O:8:"stdClass":8:{s:25:"variant_characteristic_id";s:1:"1";s:18:"variant_product_id";s:2:"35";s:8:"ordering";s:1:"0";s:17:"characteristic_id";s:1:"1";s:24:"characteristic_parent_id";s:1:"3";s:20:"characteristic_value";s:3:"7 m";s:20:"characteristic_alias";s:0:"";s:23:"characteristic_ordering";s:1:"0";}s:10:"7m / 13.7m";s:3:"7 m";}


a:2:{i:0;O:8:"stdClass":8:{s:25:"variant_characteristic_id";s:1:"2";s:18:"variant_product_id";s:3:"349";s:8:"ordering";s:1:"0";s:17:"characteristic_id";s:1:"2";s:24:"characteristic_parent_id";s:1:"3";s:20:"characteristic_value";s:6:"13.7 m";s:20:"characteristic_alias";s:0:"";s:23:"characteristic_ordering";s:1:"0";}s:10:"7m / 13.7m";s:6:"13.7 m";}

$q = 'SELECT c.characteristic_value AS cv ,pr.price_value  AS pv
FROM  #__hikashop_product p INNER JOIN #__hikashop_variant v ON(p.product_id = v.variant_product_id )
INNER JOIN #__hikashop_characteristic c ON(v.variant_characteristic_id = c.characteristic_id)
INNER JOIN #__hikashop_price pr ON (pr.price_product_id = p.product_id)
WHERE p.product_id = ' . $item->product_id .';';
	  	$db->setQuery($q);
	  	$row = $db->loadRow();
      	     
		$cartProduct = array(
			'PRODUCT_CODE' => $item->order_product_code,
			'PRODUCT_QUANTITY' => $item->order_product_quantity,
			'PRODUCT_IMG' => '',
			'item' => $item,
			'product' => $product,
			'CHARACTERISTIC_VALUE' => $row[0], 
			'ITEM_PRICE' => $row[1], 
		);