TSQL OLE Automation of Project

[Rob]

Wondering if someone can help me out with this. I'd like to do call FileOpen
for Project from a stored procedure. I'm running windows server 2003 and
Project Server 2003. Below is my TSQL, and I've played around with this with
no success. I've tried the syntax of using the method with parens and args
in between with no avail. The create and destroy appears to work. The
method call returns ' Call was rejected by callee.' Please help.

DECLARE @object int
DECLARE @hr int
DECLARE @property varchar(255)
DECLARE @return varchar(255)
DECLARE @src varchar(255), @desc varchar(255)

-- Create an object.
EXEC @hr = sp_OACreate 'MSPROJECT.Application', @object OUT
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object, @src OUT, @desc OUT
SELECT hr=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END

-- Call a method that returns a value.
EXEC @hr = sp_OAMethod @object, 'FileOpen', @return OUT, '<>\My
File.Published'
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object, @src OUT, @desc OUT
SELECT hr=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
PRINT @return

-- Destroy the object.
EXEC @hr = sp_OADestroy @object
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object, @src OUT, @desc OUT
SELECT hr=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END