I need to update the Margin field which is a one2many field of SaleOrderLine to field margin in another model StockMove. How can we achieve it in Odoo 15

class SaleOrderLine(models.Model):
    _inherit = 'sale.order.line'
    Margin = fields.Float(string="Margin")

    @api.model
    def action_confirm(self):
        record = self.env['stock.move'].update({'Margin': self.Margin})
        print(record)
        return super(SaleOrderLine, self).action_confirm(self)


class StockMove(models.Model):
    _inherit = 'stock.move'
    Margin = fields.Float(string="Margin")

This is the python code which i have written