Mulit Table Insert

Can some one point me in the right direction on this. I am trying to insert data into two different table. The problem is, even though table 2 had a "not null" on it's primary, the insert command still allow it to be null.

Here is what I am trying to do. When I click the submit button on my web app, it should send this information in for to table 2. The procedure should then pull the id2 and and enter it into the table as FK to table 1.

Like I said before, the id2 doesn't seem to pass any data because the procedure is passing a null, even thout a set the pk value to not null.


DECLARE @identHolder int
DECLARE @ID2 int

BEGIN TRANSACTION
IF NOT EXISTS (SELECT ID2 FROM [tbl2] WHERE ID1 = @ID2)
BEGIN
(SELECT 2ID FROM [tbl2] WHERE ID1 = @ID1) SET @identHolder = @@Identity

END
ELSE
BEGIN
INSERT INTO [t2] ([fName], [lName], [shift], [userName], [emailAdd])
VALUES ( @fName, @lName, @shift, @userName, @emailAdd) SET @identHolder = @@Identity

END
COMMIT

SET @ID2 = (@@Identity)
INSERT INTO [tbl1]([ID1], [ID2], [event], [removed])
VALUES (@ID1, @ID2, @event, @removed)