My question involves labor and employment law for the state of: Florida

I was just asked back for a 2nd interview for a State job (SAO). During the initial application, I just realized I mistakenly checked "no" to the background info questions regarding:
~Convited felony/misdemeanor?
~Pled Nolo Contendere/Guitly to felony/misdemeanor?
~Adjudication of gulit withheld for felony/misdemeanor?

The charges were DUI and possession 24 years ago when I was 18. I havent completed a job application in years, which is why I forgot the charges were even on record.
Convicted by Plea - Adjudication Withheld
Dipsosed-Probation
My lawyer at the time was supposed to have had record sealed/expunged, as I was trying to pursue a law enforcement carreer. I guess he never did. (I was reminded of the charges when a background check to coach city soccer was declined due to these charges--on public record.)
QUESTION.....How do I best bring this to the attention of the potential employer? At the interview? Contact HR to correct? wait for them to question me about it after background check?

I have been a nurse for 13 years and went through this when I got my license. I have never had this preclude me from a job. PLEASE ADVISE????