Dynamic form fields, dynamic form field validations: how to validate?

[eluser]LuckyFella73[/eluser]

In order for the callback to work, I’m going to need the field’s id.

Why do you need ids of the form elements for you callback function?
The callback function runs server side - how can the id be usefull for validating?

In case I'm wrong, the only way to build these rules would be sticking to naming conventions
for on server side you can't read ids from parsed html sourcecode that does not
exist when the callback function is called.