anchor.diff:  
   %% @hidden
   diameter_accounting_interim(SId, Username, RequestNum, Usage) ->
  -	UsedUnits = #'diameter_cc_app_Used-Service-Unit'{'CC-Total-Octets' = Usage},
  +	UsedUnits = #'diameter_cc_app_Used-Service-Unit'{'CC-Total-Octets' = [Usage]},
   	CC_CCR = #diameter_cc_app_CCR{'Session-Id' = SId,
   			'Auth-Application-Id' = ?CC_APPLICATION_ID,
   			'Service-Context-Id' = "nas45@testdomain.com" ,
   			'User-Name' = Username,
   			'CC-Request-Type' = ?'DIAMETER_CC_APP_CC-REQUEST-TYPE_UPDATE_REQUEST',
   			'CC-Request-Number' = RequestNum,
  -			'Used-Service-Unit' = UsedUnits},
  +			'Used-Service-Unit' = [UsedUnits]},
   	{ok, Answer} = diameter:call(?SVC_ACCT, cc_app_test, CC_CCR, []),
   	Answer.
   	
  
positive.code: 			'Auth-Application-Id' = ?CC_APPLICATION_ID,
  			'CC-Request-Type' = ?'DIAMETER_CC_APP_CC-REQUEST-TYPE_INITIAL_REQUEST',
  			'CC-Request-Number' = RequestNum0, 'Granted-Service-Unit' = GrantedUnits0} = Answer0,
  	#'diameter_cc_app_Granted-Service-Unit'{'CC-Total-Octets' = Balance0} = GrantedUnits0,
  	Usage0 = Balance0 - 1000000,
  	RequestNum1 = RequestNum0 + 1,
  	Answer1 = diameter_accounting_interim(SId, Username, RequestNum1, Usage0),
  	#diameter_cc_app_CCA{'Result-Code' = ?'DIAMETER_BASE_RESULT-CODE_SUCCESS',
  
negative.code: 	{ok, [{auth, AuthInstance}, {acct, _}]} = application:get_env(ocs, diameter),
  	[{Address, Port, _}] = AuthInstance,
  	Secret = "s3cr3t",
  	InitialBal = 1000000,
  	ok = ocs:add_client(Address, Port, diameter, Secret),
  	ok = ocs:add_subscriber(UserName, Password, [], InitialBal),
  	[{username, UserName}, {password, Password}, {init_bal, InitialBal}] ++ Config;
  init_per_testcase(_TestCase, Config) ->
  	Config.
  
  