How to Implement Suspend and Resume in Custom Activities in Elsa 3.4?

[hoshiufxy-sketch]

I'm developing a custom activity in Elsa 3.4 that should suspend workflow execution and resume later. However, when I run my custom activity, it always gets stuck in the Suspended state and never resumes.

Interestingly, when I use the built-in RunTask activity with the same workflow setup, it works perfectly and resumes as expected.

Has anyone encountered this issue or can provide guidance on what might be causing a custom activity to hang in suspend while RunTask works fine?
protected override async ValueTask ExecuteAsync(ActivityExecutionContext context)
{
var scriptName = context.Get(ScriptName);
var taskName = "Script1";
var identityGenerator = context.GetRequiredService();
var taskId = identityGenerator.GenerateId();

    var stimulus = new RunTaskStimulus(taskId, taskName);
    context.CreateBookmark(stimulus, ResumeAsync, includeActivityInstanceId: false);


    var taskParams = new Dictionary<string, object>
    {
        ["scriptName"] = scriptName
    };


    var runTaskRequest = new RunTaskRequest(context, taskId, taskName, taskParams);

 
    var dispatcher = context.GetRequiredService<ITaskDispatcher>();
    await dispatcher.DispatchAsync(runTaskRequest, context.CancellationToken);
    context.JournalData.Add("ScriptName", scriptName);
    await context.CompleteActivityAsync();

}

private async ValueTask ResumeAsync(ActivityExecutionContext context)
{

    var resumeInput = context.GetWorkflowInput<object>("result");
    Result.Set(context, resumeInput?.ToString() ?? "No result provided");

    await context.CompleteActivityAsync();
}