Hi,
sorry this is not possible, there is no interaction between fields to filter values.

But this could be a great feature, so in next release we will try to improve "Select" field type to do this, now "Select" field type allow to get options from DB, we could add some thing to filter these options based from another field value.

Hi,
good news, in the next release we will add this new feature (experimental), see video

We will add to new parameters, to filter DB options from another field value:
1) Field to retrieve value to filter
2) Column on table where will be applied this filter

This is very useful feature, i.e. Category -> Article or Country -> State -> City

My example (countries, states, cities):

I have installed on DB the countries, states and cities from https://github.com/hiiamrohit/Countries-States-Cities-database

Hey, i just checked my profile here. That is great. Thanks for the feature. I was just discussing a new website with my better half and we are going to benefit from many of the easy profile items. I find it is the best user component for Joomla ever!!!

Hi,
How can I do to put the correct state fields when I select a country ?

Hi,
I suppose you have a tables structure like this:
Table Countries "countries":
country_id (ID of the country)
country_name (Name of the country)

Table States "states"
state_id (ID of the state)
state_name (Name of the state)
country_id (ID of the country associated)

So you need to create 2 select fields, Country and States, and fill options like screenshots.

Thanks and how can I do to display the field only when the parent field i validate (as your video) ?

Hi,
you can do this with conditions, so in the field "Country" you can set a condition like: if not equal to custom value (empty) then show field "State"