How can I communicate between multiple widgets? I have 2 widgets on the same page, and when clicking on one of the first widget button, I need to modify the content of the second widget.

Details: I extend FieldMany2One (selectbox) and ListView. What I need is, when select an option in FieldMany2One, I need to update content in ListView. What I need is to get an instantiated widget into another widget. In method reinit_value of FieldMany2One widget, I need to get instance of the ListView.

Can anyone help me?

Best regards, Pedro