Problem No Return Type for a Stored Procedure in a Linq to SQL Data Layer

I use linq method on my web, when i want to use store procedure that have temporary table for selecting data, this mechanism do not return an auto generate return type, but for a simple store procedure that only select * from tableA, this mechanism running well, to solve complex sp, so i create sp that contain simple structure and after that i drag to dbml on vs 2008, after that i edit sp it again for next syntax, i think linq need to be update for this problem.

Related topic : http://forums.asp.net/p/1231821/2225086.aspx