Hello,

i need some help. I want to write a value after a module installation in odoo 15.

i tested it only with one id but later i wanted to iterate through all the partners.

I have the problem that the write function doesn't work. 

I tried different ways but the value is never shown in the model.

class ResPartner(models.Model):    
_inherit = 'res.partner'        
customernumber_id = fields.Many2one('videc.customer.number')    
customernumber = fields.Integer(string="Kundennummer",related='customernumber_id.customernumber')    
vdb_customernumber = fields.Integer(string="Kundennummer",related='customernumber_id.vdb_customernumber')        

def init(self):       
 record_to_update = self.env["res.partner"].browse(138)        
 vals = {'customernumber':11}             
 record_to_update["customernumber_id"].write(vals)