Function is stuck in WaitForBatchJobAsync forever

[OGG20221017]

I was able to run the code and jobs are created and completed properly but I never receive the event.

For example, the "durable-function-event-raiser" task in the job "08edbf0951cb4c5189f866ecaa72006e_Tokio" is created with this command:
powershell -Command "&{$done=@{ done=1 }; $json=$done | ConvertTo-Json; Invoke-WebRequest -ContentType 'application/json' -Uri https://*******.azurewebsites.net/runtime/webhooks/durabletask/instances/08edbf0951cb4c5189f866ecaa72006e/raiseEvent/batchjob-finished-08edbf0951cb4c5189f866ecaa72006e_Tokio -Method POST -Body $json }

But when the task is executed I get:
stderr202303011335.txt

When I add a timeout to the WaitForBatchJobAsync function:

        public static async Task WaitForBatchJobAsync(this IDurableOrchestrationContext context, string jobId, TimeSpan timeout)
        {
            var eventName = GetJobFinishedEventName(jobId);
            await context.WaitForExternalEvent(eventName, timeout);
        }
        ...
        await Task.WhenAll(
                context.WaitForBatchJobAsync("Tokio", TimeSpan.FromMinutes(5)),
                context.WaitForBatchJobAsync("Seattle", TimeSpan.FromMinutes(5)),
                context.WaitForBatchJobAsync("London", TimeSpan.FromMinutes(5))
                );

I get:
System.Private.CoreLib: Exception while executing function: MultipleJobOrchestrator. System.Private.CoreLib: Orchestrator function 'MultipleJobOrchestrator' failed: Event batchjob-finished-Tokio not received in 00:05:00.

Do I have to add an Event Subscription to the Function App?

Is there any way of monitoring if the event is received?

[OGG20221017]

I think I found the solution in https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api#raise-event ("code" was needed)

[OGG20221017]

Fix:

Custom.Azure.WebJobs.Extensions.AzureBatch.AzureBatchOrchestrationContextExtensions

        public static async Task WaitForBatchJobAsync(this IDurableOrchestrationContext context, string jobId)
        {
            jobId = GetJobId(context.InstanceId, **jobId);
            var eventName = GetJobFinishedEventName(jobId);
            await context.WaitForExternalEvent(eventName);
        }