Update using XML part2

ALTER proc [dbo].[sp_Update_ModelPrice]
(
@xmlString varchar(max)
)
as
DECLARE @index int
--set @xmlString='<brand><model id="1"><category id="1"><subCatid>1</subCatid><price>12</price></category></model></brand>'
BEGIN
EXEC sp_xml_preparedocument @index OUTPUT, @xmlString
update dbo.tblModelPrice
set Price=xmlprice

FROM OPENXML (@index, 'brand/model/category')
WITH (xmlModelId int '../@id',xmlCatid Varchar(10) '@id',xmlsubCat varchar(100) 'subCatid',xmlprice varchar(100) 'price')
where ModelID=xmlModelId and ModelCategoryID=xmlCatid and ModelSubCategoryID=xmlsubCat

EXEC sp_xml_removedocument @index

END