LINK STATES WITH CITIES!! HELP

LINK STATES WITH CITIES!! HELP

Hi!! Creator is AWSOME!! but i need some help:

I�ve already make my State Input restrict the possibilities on the Cities Field (like if I put one State name, i can only select the cities inside that State).....THIS IS OK FOR ME ALREADY....


NOW I WANT TO GO ONE STEP FURTHER :)

I want to make my Cities Input restricts the possibilites to the States names (when i write the cities names, the correct State names will appears)............is the oposite of the first one

BUT
i tryed to do the same that i did in the past, i put the same scripts in The Cities Field and in the States field............THE PROBLEM IS THAT WHEN I UPDATE ONE FIELD, THE OTHER ONE GETS UPDATED AGAIN....THEN I GO BACK TO THE OTHER FIELD AND CHOOSE THE STATE AND THAN THE CITIES GET UPDATED AGAIN....OVER AND OVER ADN OVER.......I CAN NEVER FIX ONE OF THE 2 FIELDS

HOW CAN I FIX THIS FIELDS SO THAT THEY CANNOT CHANGE AFTER CHOOSING THE OTHER LINKED FIELD ??