At 11:51 AM 1/12/2003 +0000, you wrote:

>why do i get this error ?
>INTERPRETE BUFFER = validation error for column ID_USER, value "***
>null ***"

It looks to me as if you are using an old version (pre-version 4.3) of IB
Objects with Firebird 1.5, without setting the server configuration
parameter (firebird.conf)
OldParameterOrdering=1

/heLen