Hi, 

You can follow following link for this:

https://youtu.be/GPhgxxwprA4

Hope it helps,

Thanks

Hi, try this:

def _dinamic_selection(self):
    list_field = []
    # add elementos to list
    return list_field

_columns = {
    'field_selecction' : fields.selection('_dinamic_selection', 'Dinamic Field Selection'),
}

I hope you help, regards.