anchor.diff:      if
           User_1 == User_2 -> acl_check(Op1, Occi_Node, User_1);
           User_1 =/= User_2 ->
  -            Group_res = read_user(User_2),
  -            Group_tuple = element(2, Group_res),	
  -            lager:debug("Group :~p~n", [Group_tuple]),
  -            [H | _T] = Group_tuple,
  -            Groups = H#occi_user.groups,
  -            lager:debug("Group :~p~n", [Groups]),	
  -            case Groups of
  -                undefined ->
  -                    Groupe = {group, Groups},
  -                    acl_check(Op1, Occi_Node, Groupe);
  +            User_21 = binary_to_list(User_2),
  +            Group_res = epasswd:get_group_user(User_21),	
  +            lager:debug("Group_res :~p~n", [Group_res]),
  +            case Group_res of
  +                "undefined" ->
  +                    Group = {group, <<"undefined">>},
  +                    lager:debug("Group :~p~n", [Group]),
  +                    acl_check(Op1, Occi_Node, Group);  
                   _ ->						
  -                    Groupe = {group, Groups},
  -                    lager:debug("Group :~p~n", [Groupe]),
  -                    acl_check(Op1, Occi_Node, Groupe)
  +                    Group = {group, <<Group_res>>},
  +                    lager:debug("Group :~p~n", [Group]),
  +                    acl_check(Op1, Occi_Node, Group)
               end
       end.
   
  -acl_check(Op1, Occi_Node, Groupe) ->
  -    case occi_acl:check(Op1, Occi_Node, Groupe) of
  +acl_check(Op1, Occi_Node, Group) ->
  +    case occi_acl:check(Op1, Occi_Node, Group) of
           allow ->
               lager:debug("Autorized"),
               {true};
  
positive.code:                 host=exmpp_jid:domain(Jid), 
                  userinfo=exmpp_jid:node(Jid)},
      occi_config:set(name, Name),
      TState = session(Props),
      State = element(2, TState),
      Session = State#state.session,
      epasswd:start(Session),
      {ok, State}.
  
  %%--------------------------------------------------------------------
  %% @private
  
negative.code:     exmpp_session:send_packet(Session, Status),
      %% TODO : Maybe call in another place
      iq_roster(Session),
      epasswd:start(Session),
      {ok, S}.
  
  presence_subscribed(Session, Recipient) ->
  