anchor.diff:  			undefined ->
   			    UserAdded = Stream;
   			UId ->
  -			    UserAdded = api_help:add_field(Stream,"user_id",UId)
  +			    UserAdded = api_help:add_field(Stream,"user_id",string:to_lower(UId))
   		    end,
   		    case lib_json:get_field(UserAdded,"user_id") of
   			undefined -> {false, wrq:set_resp_body("\"user_id missing\"",ReqData), State};
  
positive.code: 			UserQuery = [],
  			UserDef = false;
  		UserId ->
  			UserQuery = "user_id:" ++ UserId,
  			UserDef = true
  		end,
  	FullQuery = lists:append(api_help:transform(URIQuery,UserDef),UserQuery),
  
negative.code: 							UserQuery = [],
  							UserDef = false;
  						UserId ->
  							UserQuery = "\"user_id\":\"" ++ string:to_lower(UserId) ++ "\"",
  							UserDef = true
  					end,
  					case UserDef of
  