Hi,
I want to create a trigger in which one dropdown is dependent upon the other drop down selection.
For ex : I have create a trigger in which I have added a dynamic dropdowns which show’s me the list of categories.
I need to add another dropdown in the same trigger and show the list of subcategories based the 1st dropdown category selection.
How can I achieve the same.

Note : I need to create that scenario in trigger not in actions.
Thanks