Hello  Mélanie ,

First of all you can't compare instances of 'datetime.timedelta' and 'int'

to get number of years between two dates try this:

date_diff= dateutil.relativedelta.relativedelta(record.date1, record.date2)
years = date_diff.years

same thing

RPC_ERROR

Odoo Server Error

Traceback (most recent call last):

  File "/home/odoo/src/odoo/saas-16.4/odoo/safe_eval.py", line 243, in test_expr

    code_obj = compile(expr, filename or "", mode)

  File "", line 5

    if datetime.now().date() - record.x_studio_date_achat_apisolis

                                                                  ^

SyntaxError: expected ':'

The above server error caused the following client error:

null

Hello, 

Try to add the field x_studio_garantie  in your depencies list (separated by a comma) . 

Marc