Unity / DEMO-allModulesScene / get UserID

I am from Unity [allModulesScene]
I want to get the user id of the current skeleton.

The part I’m worried about is
I want to get my id activated in [SkeletonVisualization2.cs].
skeletonData -> UserID
But it does not work.

I think I have a wrong approach.

Thank you for reading.

I get your user id below …
skeleton.ID.ToString ();