checkbox

Hola,
me ha sido muy difícil crear algo tan simple como guardar y luego obtener los datos de un checklist desde un formulario.
Como lo hago para guardar los valores seleccionados en un checkboxlist desde un formulario en mi BDM?
La información que he visto es muy baga y las soluciones son para versiones anteriores a 7.x
Gracias!

Hello,
I'm having a hard time trying to do something as simple as saving a group of values from a checklist.
How do you manage the checkboxlist to be saved in the BDM like you do with any other widget in a form?
All the information I have found is for older versions.
Thank you!

In the Manage dialog of Business Data Model the checkboxes for showing and setting the multiple and mandatory attributes are displayed wrongly on a Mac running OSX El Capitan.

All the checkboxes are rendered as black boxes and no tick can be seen, so is impossible to know if the attribute is set or unset.