Thanks for your answer Alan,

> the persistent fields can be set to boolean - just give it the true/false
> values

You mean a calculated field? I made that and put the necessary code at
onCalcFields and it works fine.

> PS - you've got to get rid of the tables ASAP

It's only temporary, I'm getting crazy with BDE and Paradox... But
tell me: is that bad work with TIBO_Tables? Will I have trouble with
that?

Thanks,

Andrei