hi, tom. I am testing your generator, because i also need it. I put your generator in the default value of a field make a main index in that field and then run the follow: set talk off use test do while .t. append blank enddo it crash. with a "duplicated" if you make something like ( ? the value of the number ) after adding each record, it works fine. what about the automatic change of the time in summer/winter? My testing board is a P133 with W95 and 8mb running VFP 3.0b Spanish version. Is it a help to you? Miguel.