I have two tables in Supabase joined by a junction table to create a many-to-many relationship. In FlutterFlow, I want to create two dropdowns: the first for subjects (Table A) and the second for grades (Table B). I need to filter the second dropdown based on the selection made in the first. How can I achieve this? Additionally, how do I ensure that these selections are sent to a third table (Table 3), which also receives the file I am uploading?
