Trouble with set_value() & callback form validation

[eluser]lennierb5[/eluser]
That produced an error since code_0 does not exist. I actually worked around this by putting my callback function in a hidden field that didn't need to be validated. No problems with set_value then.

I am using CI 2.0 not sure if this could be a bug or if is an odd error somewhere else in my code.