Upload to component field

System Information
  • Strapi Version: 4
  • Operating System: Windows 10
  • Database: PostgreSQL
  • Node Version: 14
  • NPM Version: 6

In docs:

If you want to upload files for a component, you will have to specify the index of the item you want to add the file to. Example files.my_component_name[the_index].attribute_name

can I get an example??