I'm using Entity Framework in an ASP.NET MVC3 application and I'm trying to use the following code:

var token = "";
this.Database.ExecuteSqlCommand("exec dbo.MyUsp", new SqlParameter("token", token));

My stored proc signature is:

CREATE PROCEDURE MyUSP(@token varchar(10) OUT)
(...)

When I use this code I get an error saying that parameter "@token" was expected but not supplied.

How do I tell EF that the token parameter is for output?

asp.net-mvc entity-framework asp.net-mvc-3
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