Large Object => invalid input syntax for integer: ""

I need to use large objects BUT I am having problemns... I instaled
PostgreSQL 8.0.3 windows version with lo module.

first, I created the table below:
CREATE TABLE test
(
description varchar(20),
picture lo
)
WITHOUT OIDS;

After trying to make one insert without value for the lo I get the error
below:

INSERT INTO test VALUES (1);

ERROR: invalid input syntax for integer: ""

Which value I can put on the default of the lo to solve this ? I alreday
tryed -1, 0, 1, null but nothing works...

Why this problem?

Regards,

Rodrigo Carvalhaes

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