Thanks. Couldn't make that work though. For example, I am trying to uncheck the group_multi_currency setting

Here is what I've done:

model = env["ir.values"]
result = model.sudo().set_default(
    'base.config.settings','group_multi_currency','f'
)

This will update the ir_values table:

id | model_id |         name         |   key   | value
----+----------+----------------------+---------+-------
 70 |          | group_multi_currency | default | S'f'  +
   

And this does not affect the value of the property.

Furthermore, anytime the module is started, the record in ir_table will be deleted and a new one created.

Hello @Romain Buisson,

If you are trying to save something in the settings you can do it like this.

_inherit="base.config.settings"

@api.multi

def set_field_name_default(self):    

    return self.env['ir.values'].sudo().set_default(

            'base.config.settings', 'field_name', self.field_name)

Then to access the saved value in the settings,

ir_values = request.env['ir.values']

field_value = ir_values.get_default('base.config.settings', 'field_name')

Can you please mark this as a resolved if you are satisfied with my answer.