anchor.diff:  			{Auth, Credential} ->
   			    case uce_presence:add(#uce_presence{uid=Uid,
   								auth=Auth,
  -								org=Org,
   								metadata=Metadata}) of
   				{error, Reason} ->
   				    {error, Reason};
   				Sid ->
  -				    uce_event:add(#uce_event{location=[Org, ""],
  +				    uce_event:add(#uce_event{location=["", ""],
   							     from=Uid,
   							     type="internal.presence.add",
   							     metadata=Metadata}),
  
positive.code: init() ->
      [#uce_route{module="Presence",
  		method='PUT',
  		regexp="/presence/([^/]+)/([^/]+)",
  		callbacks=[{?MODULE, add,
  			    ["auth", "credential", "metadata"],
  			    [required, required, []],
  
negative.code: 			    [string],
  			    [user]}]}].
  
  add([Uid], [Auth, Credential, Metadata], _) ->
      case uce_acl:check(Uid, "presence", "add", ["", ""], []) of
  	true ->
  	    case uce_user:get(Uid) of
  		{error, Reason} ->
  