Insert Into [option Table] In Sql Server 7

Dear,

i got solve for my problem later.But I meet with new difficulty,my the following gives example script

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CREATE TRIGGER Niru_data ON dbo.trans_r
FOR INSERT
AS
DECLARE
@Code_Month char(4),
@name_table char(10),
@noreg char(7),
@tr_date char(6),
@Rec_contain char(20)
SELECT
@Code_Month = substring(tr_date,1,4) from inserted
SELECT
@name_table = "trans_"+@code_Month
SELECT
@noreg = a.noreg,
@tr_date = a.tr_date,
@rec_contain = a.rec_contain
FROM
trans_r a INNER JOIN inserted b
ON
a.noreg=b.noreg
insert into @name_table values(@noreg,@tr_date,@isi)
GO
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That's trigger not succesfull cause i try to insert table with variable declaration (@name_table).
some body can help me ????

Thank you before that