I have a big problem: TIBOQuery and TIB_Query doesn't have the same
behavior.

I'm evaluating IBObjects and, at the first try I'm getting the "Field
xxx must have a value" error with TIBOQuery/TIBOTable. I tryed
everything: I wrote the sql by my own; used parameters in SQL;
changed the required field property to false (in design and run
time), with no sucess.

And now I tryed to use the TIB_Query, exactly as I was using
TIBOQuery, and IT WORKS! The error is gone.

Anybody could, please, tell me why?
What I'm doing wrong?

Thank you all

Antonio Carlos