I am trying to implement settings

This is what the settings model looks like

# -*- coding: utf-8 -*-
from odoo import models, fields, api

class RectangleMapsSettings(models.TransientModel):
    _inherit = 'res.config.settings'

    defaultStandDepth = fields.Float(string="Standard Standtiefe")

    def set_values(self):
        res = super(RectangleMapsSettings, self).set_values()
        self.env['ir.config_parameter'].set_param['rectanglemaps.defaultStandDepth', self.defaultStandDepth]
        return res


    @api.model
    def get_values(self):
        res = super(RectangleMapsSettings, self).get_values()

        ICPSudo = self.env['ir.config_parameter'].sudo()
        depth = ICPSudo.get_param('rectanglemaps.defaultStandDepth')
        res.update(
            defaultStandDepth=depth
        )
        return res

Odoo Server Error

Traceback (most recent call last):
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 684, in dispatch
    result = self._call_function(**self.params)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 348, in checked_call
    result = self.endpoint(*a, **kw)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 913, in __call__
    return self.method(*args, **kw)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 532, in response_wrap
    response = f(*args, **kw)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/web/controllers/main.py", line 1396, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/web/controllers/main.py", line 1384, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/api.py", line 399, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/api.py", line 386, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/addons/base/models/res_config.py", line 623, in execute
    self.set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/sale_management/models/res_config_settings.py", line 28, in set_values
    return super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/sale/models/res_config_settings.py", line 67, in set_values
    super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/website/models/res_config_settings.py", line 144, in set_values
    super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/stock/models/res_config_settings.py", line 74, in set_values
    res = super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/crm/models/res_config_settings.py", line 111, in set_values
    super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/account/models/res_config_settings.py", line 111, in set_values
    super(ResConfigSettings, self).set_values()
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/addons/rectanglemaps/models/settings.py", line 11, in set_values
    self.env['ir.config_parameter'].set_param['rectanglemaps.defaultStandDepth', self.defaultStandDepth]
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 640, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/Users/jgs/jgs/Coding/Projects/odoo14/odoo-14.0/odoo/http.py", line 316, in _handle_exception
    raise exception.with_traceback(None) from new_cause
TypeError: 'method' object is not subscriptable

    
        res.config.settings.view.form.inherit.sale
        res.config.settings
        
        
        
            
                

                    
Rectanglemaps

                    

                        

                            
                            
                        

                    

                

            
        
    

    
        Rectanglemaps Einstellungen
        ir.actions.act_window
        res.config.settings
        
        form
        inline
        {'module' : 'rectanglemaps'}
    

                  name="Konfiguration"
              parent="rectanglemaps_root"
              sequence="100"/>

                  name="Einstellungen"
              parent="menu_rectanglemaps_configuration"
              sequence="10"
              action="action_rectanglemaps_config_settings"/>