--- In IBObjects@y..., Helen Borrie <helebor@d...> wrote:

> At 10:06 AM 06-06-01 +0000, you wrote:
> >Helen
> For example, to set off the REQUIRED property for NFILE_UP, you

would put this statement in the BeforeInsert event handler:

>
> MyTable.FieldByName('NFILE_UP').Required := False;

Thanks for all your detailed explications.
I tried it but I always get exception.

I tried a TIBTAble connected with TIBDatabase
I included all fields in TIBTAble and excluded NFILE_UP.
It works fine !!

Best Regards.
Adalberto Baldini