How to capture FormTask infos?

I am trying to acess the response object of my activity (Wait for Form Task and Resume).

I am not fiding anything about this on UIPath Docs, so i started trying somethings like get the Object.Data what looks like a json string, but when i try to use json objects, i get this exception.

What can i do?

You can use formdata collection where you can provide the out type argument to get the values from the form entered by user