How to pass multiple parameters to a KernelProcessStep in C# Process Framework

[vicperdana]

For example, if I have the following KernelFunction

[KernelFunction(Functions.PrepareVideo)]
    public async Task<string> PrepareVideoAsync(VideoProcessingRequest request, Action<VideoProcessingProgress> progressCallback, KernelProcessStepContext context)

How do I set this up in the ProcessBuilder. This is what I have now (and it's working as i can view the request parameter being passed to the step)

processBuilder
   .OnInputEvent("Start")
   .SendEventTo(new(prepareVideoStep, functionName: PrepareVideoStep.Functions.PrepareVideo, parameterName: "request"))

Should I repeat the .SendEventTo line by adding another parameter like the following?

 processBuilder
   .OnInputEvent("Start")
   .SendEventTo(new(prepareVideoStep, functionName: PrepareVideoStep.Functions.PrepareVideo, parameterName: "request"))
   .SendEventTo(new(prepareVideoStep, functionName: PrepareVideoStep.Functions.PrepareVideo, parameterName: "_progressCallback"))

[sophialagerkranspandey]

Tagging @alliscode

[MalayAgr]

+1 to this, would appreciate a response

[gleesse]

Looking at the ProcessStepBuilder.cs implementation, the Process Framework can only bind one parameter per incoming event.

Routing the same event twice, once per parameter seems to be a workaround (as in your second example). Not sure if this is correct by design though.
Another way is to create a predefined Dto and pass it as a single parameter

[markwallace-microsoft]

@esttenorio Can you help here?

[esttenorio]

Why do you need to pass the same parameter twice to the same step?

Regarding sending multiple events to different steps it it possible:

 processBuilder
   .OnInputEvent("Start")
   .SendEventTo(new(prepareVideoStep, functionName: PrepareVideoStep.Functions.PrepareVideo, parameterName: "request"))
   .SendEventTo(new(someOtherStep, functionName: PrepareVideoStep.Functions.PrepareVideo, parameterName: "_progressCallback"))