如何将Formflow值传递给QnaMaker

Question

我正试图从FromFlow中获取一个值，并将其传递给QnA Maker以获取答案。 我尝试通过以下方式进行操作：

[LuisIntent（“ GenericQuestions”）]         公共异步任务NewGenericQuestions（IDialogContext上下文，LuisResult结果）         {             var GenericQuestionsRequestForm = new FormDialog（new GenericQuestions（），GenericQuestions.BuildForm，FormOptions.PromptInStart，null）;             context.Call（GenericQuestionsRequestForm，GenericQuestionsFormCompleteAsync）;         }

    private async Task GenericQuestionsFormCompleteAsync(IDialogContext context, IAwaitable<GenericQuestions> result)
    {
        try
        {
            var genericQuestionsFormData = await result;
            var question = genericQuestionsFormData.troubleshootingOption.ToString();
            await context.PostAsync(question);
            await context.Forward(new BasicQnAMakerDialog(), AfterQnA, question, CancellationToken.None);
            context.Wait(MessageReceived);
        }
        catch (FormCanceledException<MailboxRequestForm> e)
        {
            string reply;
            if (e.InnerException == null)
            {
                reply = $"You quit the request. Maybe you can finish next time!";
            }
            else
            {
                reply = "Sorry, the request could not be processed. Please try again.";
            }
            await context.PostAsync(reply);
        }
        catch (Exception)
        {
            await context.PostAsync("Sorry, the request could not be processed. Please try again.");
        }

    }

在这里，我能够从Formflow中获取正确的值，但是当我尝试将该值传递给QnA Maker时，它会出现异常。

我可以通过任何方式将FormFlow的值传递给QnA Maker。

谢谢。