Hello,

I'm using Odoo 13 Community Edition on Windows.

The Onchange method:

@api.onchange('vorgang_auswahl')

    def _onchange_vorgang_auswahl(self):

        if self.vorgang_auswahl == 'gewinde':

            self.workcenter_id = 6

So if the user select the value "gewinde" from the selection field, the workcenter_id is directly "6", now i also want that if the user select "gewinde", the workcenter_id is "6" and the field should only show the ids "6" and "7". 

I already tried to use domain or something, but i failed.

Thanks in advance.