Thanks for the answer!! The thing is that there are more than one choice:
Select province: Province 1
Province 2
Province 3
Province 1 selected > Then shows (With conditional fields):
[showed]Province 1 towns menu: Town 1|mail_1@mail.com
Town 2|mail_2@mail.com
Town 3|mail_3@mail.com
[hided]Province 2 towns menu: Town 1|mail_4@mail.com
Town 2|mail_5@mail.com
Town 3|mail_6@mail.com
[hided]Province 3 towns menu: Town 1|mail_7@mail.com
Town 2|mail_8@mail.com
Town 3|mail_9@mail.com
So at the end, I need de correct mail with the double choosen option, i don’t know if Im explaining it very well…
Thanks for teh answer anyway