I'd like to dynamically change the options in dropdown (B) based on the selected option in dropdown (A).
E.g. If I select "Jeep" in dropdown (A), the options in (B) become "Cherokee", "Grand Cherokee", "CJ-7"; if I select "Toyota" in (A), the options change to "Camry", "RAV4", "Prius". Etc.
I know it's possible to dynamically populate a dropdown on load, but is it possible to do so asynchronously after the form has loaded?