Syntax error converting the varchar value

Det klickar på det rödmarkerade, vad kan vara fel?

ALTER PROCEDURE sh_getPropfromAdv
	(
	@id int,
	@sort as varchar(20)
	)

AS
Declare @QString nvarchar(500)

Set @QString = 	'SELECT id, country
		FROM tbl WHERE uid = [red]'+ @id +'[/red]
		ORDER BY '+ @sort

exec sp_ExecuteSql @QString
RETURN