ikoneweb on "[Plugin: Contact Form 7] Fields that appear when you select another field"

Hello everyone !

I would like to build a form with special field :

- one field called "Country" with a list of all the country
- That's all

1/ When i select USA on the country field, i would like to have a new field called "State/Province" with the list of the USA state.

2/ When i select Canada on the country field, i would like to have a new field called "State/Province" with the list of the Canada state.

But when a another country is selected, there is no "state/Province" field selected.

How can i do that ? Is it possible with the Contact form 7 plugin ?

Thank you !

http://wordpress.org/plugins/contact-form-7/