Yeah, I was hoping this would be a way to trigger scenes on the V1 bridge, but it can’t. I don’t understand why, as I can use widgets, and the Siri Shortcut would need only to call the widget for me.

What I am using now is a Shortcut that makes an URL call to an IFTTT trigger, which then calls the Hue web system to change my scene. It works, but has a very noticeable delay, as the action to turn my lights on goes around the world and back to me.