public void BeginDecrement(int aValue, CallbackAsyncComplete aCallback) { Invocation invocation = iService.Invocation(iActionDecrement, aCallback); int inIndex = 0; invocation.AddInput(new ArgumentInt((ParameterInt)iActionDecrement.InputParameter(inIndex++), aValue)); int outIndex = 0; invocation.AddOutput(new ArgumentInt((ParameterInt)iActionDecrement.OutputParameter(outIndex++))); iService.InvokeAction(invocation); }