I need to save the association with Users (field user_id), Groups (field group_id), Nets (field net_id) and Doctor (field doctor_id, className Users), what I need is to create an array of form controls, I remember that to do that with cakephp 2.5 I had to add a dot (.) at the end of the control name, but with 4.4 it gives me an exception of empty field, how can I create an array of controls in a form with cakephp 4.4?