how to insert values into complex type field

hi all, i want to know how to insert values into the field which is a complex type. In fact it is a complex type which also include a complex type. The following is its definition:

create TYPE lifetime as( strattime date, endtime date);

create TYPE attributetype as( ID numeric, address character(50), periodspan lifetime);

create TABLE attribute2005( gid serial, allfield attributetype);

now i want to insert data into the table attribute2005 but always failure so wish someone can help.

my sql is following:

INSERT INTO attribute2005 VALUES(1,(23,'ee','ttt',('2005-01-01','2005-12-31')));

my postgresql is 8.2 and is installed in windows XP.

thank you!

                                                                                      xiaochun wu

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