Change value of the field "State" when you change the value of the field "Country".
Hello!
How to make so that when you change the value of the field "Country" for each country was to be picked up his own set of values of the field "State" ?
For example, United States of America > Alaska, Alabama, Arizona etc., Ukraine > Donetskaya, Dnepropetrovskaya, Kievskaya etc.