I have a stored procedure called 'spD_DefectsByStateAndSeverity' which is defined as follows:

CREATE PROCEDURE [dbo].[spD_DefectsByStateAndSeverity]
(
    @ProjectID int = NULL
)
AS
SELECT * FROM Defects

 When I try to create a custom report and enter the following SQL Command:

spD_DefectsByStateAndSeverity @ProjectID = 437

I get an error saying:

"The SQL statement you entered is invalid."

 I don't understand how this could be invalid.  Any help would be great thanks in advance.