It works! Our production controlling system seems to work with 7.1beta4. In addition, I solved the conversion function problem which was described in one of my last mails. The problem was I used malloc() instead of palloc(). Thanks to all of you who developed 7.1 and helped solving the conversion function problem. Regards, Zoltan -- Kov\'acs, Zolt\'an [EMAIL PROTECTED] http://www.math.u-szeged.hu/~kovzol ftp://pc10.radnoti-szeged.sulinet.hu/home/kovacsz