Hi, I am trying to do an application with a relational database connectivity. I am using the Psycopg Database connector to a Postgresql database. Everything seems to run fine when I test the database connectivity, and when I write and test the Z SQL and DTML methods. But when I test the whole application I got the following error message: Missing input variable, first_name --> this is the first entry value Traceback (innermost last): File /usr/local/Zope-2.5.1/lib/python/Products/Hotfix_2002-04-15/__init__.py, line 51, in publish_module File /usr/local/Zope-2.5.1/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/local/Zope-2.5.1/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: AddressBook) File /usr/local/Zope-2.5.1/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/local/Zope-2.5.1/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: insert_address) File /usr/local/Zope-2.5.1/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: insert_address) File /usr/local/Zope-2.5.1/lib/python/OFS/DTMLDocument.py, line 127, in __call__ (Object: insert_address) File /usr/local/Zope-2.5.1/lib/python/DocumentTemplate/DT_String.py, line 473, in __call__ (Object: insert_address) File /usr/local/Zope-2.5.1/lib/python/DocumentTemplate/DT_Try.py, line 140, in render File /usr/local/Zope-2.5.1/lib/python/DocumentTemplate/DT_Try.py, line 149, in render_try_except File /usr/local/Zope-2.5.1/lib/python/Shared/DC/ZRDB/DA.py, line 414, in __call__ (Object: insert_address_data) File /usr/local/Zope-2.5.1/lib/python/DocumentTemplate/DT_String.py, line 473, in __call__ (Object: <string>) File /usr/local/Zope-2.5.1/lib/python/Shared/DC/ZRDB/sqlvar.py, line 99, in render (Object: first_name) Missing Input: (see above) Thanks Antonio. -- ANTONIO ALEJANDRO MATTA GÓMEZ WebMaster Facultad de Ingeniería Pontificia Universidad Javeriana - Seccional Cali Calle 18 No. 118 - 250 Av. Cañasgordas Cali, Colombia Tel. (+2) 3218200 Ext 575 Fax. 5552823