@axel.schallies

I’m not sure if you did this already, but in your DB you’ll need to have a data type ‘City’ and a data type ‘State’, which needs to include a field ‘Cities’ (list of Cities).

Set your first dropdown to data type = States and data source = Search for States (no constraints)
Set your second dropdown to data type = Cities and data source = Search for Cities, constrained by City is in Dropdown State’s Cities

Here is a quick example:
Demo: https://ambroisetestapps.bubbleapps.io/version-test/dynamic-dropdowns?debug_mode=true
Editor: https://bubble.io/page?type=page&name=dynamic-dropdowns&id=ambroisetestapps&tab=tabs-1

Hope that helps
Ambroise

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