Very nice, Antonio! I briefly tested to confirm that it doesn't mess with the getfldstate() of the field without cause- at least one of the others updates the field just by displaying. Also a nice modern GUI. Bravo!
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1