How to Retrieve Dropdown Values for Dynamic Children in Column?

Hello everyone,

From a call API, I retrieve a json with a list of cars, each of which has several possible colors associated with it.

I have a column that generates children for each car, with a text inside that displays the car name and a dropdown button that lets you choose the color.

But when I go to my actions, I can't find the possibility of retrieving the values of each dropdown button. How can I do this?

Thanks for your help !