Preferences section ?

[flagoda]

Hi, I try to add elements in my policies.json in "Preferences": {} but not work. Is Preferences is supported for Thunderbird ? I have tried this json:

{
  "policies": {
    "AppAutoUpdate": true,
    "Preferences": {
      "app.update.silent": true,
      "ldap_2.autoComplete.directoryServer": "ldap_2.servers.Annuaire1",
      "ldap_2.autoComplete.useDirectory": true,
      "ldap_2.servers.Annuaire1.auth.dn": "",
      "ldap_2.servers.Annuaire1.auth.saslmech": "",
      "ldap_2.servers.Annuaire1.description": "",
      "ldap_2.servers.Annuaire1.filename": "ldap.sqlite",
      "ldap_2.servers.Annuaire1.maxHits": 10,
      "ldap_2.servers.Annuaire1.uri": "ldaps://myldap/myfilter",
      "ldap_2.servers.Annuaire2.auth.dn": "",
      "ldap_2.servers.Annuaire2.auth.saslmech": "",
      "ldap_2.servers.Annuaire2.description": "",
      "ldap_2.servers.Annuaire2.filename": "ldap-1.sqlite",
      "ldap_2.servers.Annuaire2.maxHits": 10,
      "ldap_2.servers.Annuaire2.uri": "ldaps://myldap/myfiltrer",
      "mailnews.send_default_charset": "UTF-8",
      "mailnews.view_default_charset": "UTF-8"
    },
  }
}

Regards