How to return adaptive card values to bot framework composer

[PeKi72]

I know this question is asked many times. But i do not understand any of it. I have an adaptive card called the people-picker in the Bot Framework Composer. It has a choice field called people-picker and a button. The only thing i need is to return the choice of the choice-field the user has chosen by clicking on the button. How can i do that?

Gr. P