API Explorer - Address - Province ID - Localized province name

With a French CiviCRM UI, the following API query (made by the API explorer) fails:

  $result = civicrm_api3('Address', 'create', array(
      'sequential' => 1,
      'contact_id' => "user_contact_id",
      'country_id' => "CH",
      'state_province_id' => "Geneva",
      'location_type_id' => "Home",
  ));

IMHO it should use numerical state_province_id, as it's robust at localized sites too. As if i execute the same with numerical province id, the address is just created.