[Zope] using if with date values

I would like to insert into the this sql table the form variable birth.x. I would like to do it only if the date variable identification.birthdate is greater the that listed below. I know the current 'if' statement is incorrect and probably not even close. However, I haven't been able to find an

[Zope] Ivalid Integer from Zope

I am using the Znolk Input Wizzard with postgresql tables. One of the variables in the table is an integer and can have null values. However, in the update and insert forms, if I attempt to leave the value null, I get the following error from Zope: "Invalid integer value for weight.bcs" The v

[Zope] (no subject)

I am new to using Zope, but have been succesfull at using a psql input wizard to generate forms to dump data to a postgresql table. However, I have a dilema. I would like to generate a form that can dump multiple inserts to a variable, say x1 into a table. However, there is an additional variab