I am happy to hear that you have managed to resolve the case on your own.
Indeed, the only demo that has the additional parameter sent is the Hierarchy. As it is the only one that requires an additional parameter. It is sent via the route values option:
Thank you for pointing out that the request.Params have not been used in an example and does not contain a stand-alone article. I will log it in our tracking system as a to-do item.
In case any additional questions arise, let me know.
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