Limit sampling in a form

I have a table called Unit, Unit have address which creating from tables: Country, Regions, Municipalities, Administrative_unit, Street.
When i creating a Form and trying to add Country, then Regions, i see list of all Regions of all Countries, but i need to see list of Regions in choosed Country.
How can i solve this trouble-task? :slight_smile:

@abbzew Welcome to NocoDB! Conditional options for a field (option subset) is not supported currently.