Help with Gravity Forms

[TDT]

Hi guys. Anyone here good with the Gravity Forms plugin for WP? I need some help with a form and I couldn't find anything so far. What I want to do is add conditional logic values to a field (it's a simple form, with name and email address fields, but also with a code field, where the user would input a code and if it matches one of the codes stored in the "back" some other fields would show up), but the problem is that there are a LOT of them (about 3000). Obviously, adding them  manually would take for ever, so that's not really an option. I tried to add them directly into the coresponding mysql table, but that breaks the form because "it's serialized", no idea what that means...

Official support says I can't add these things in bulk, but I thought I would ask here too, maybe there's a workaround that would make my life easier. 

 

P.S. I know I could easily resolve my issue with a php form, but I don't know how to do that and add the validation thing to it, so GF is my only option.

 

Thanks!