for record in self:
if record.model_id.model == 'hr.employee':
employee_number_str = record.record_name
str_list = employee_number_str.split(' /')
employee_number = str_list[0]
employee = record.env['hr.employee'].search([('employee_number','=',employee_number)])
if employee:
record['x_bgxxyg'] = employee.id