Show container does not work but download container works.

That helped me interesting thing was Xcode was not suggesting new syntax.

I changed Bundle ID too and it worked fine.

I "discovered" that if power state of lightbulb is 0 you can not read or write brightness level. To get over this issue I read power state and if it was 0 I changed it to 1 first then change brightness level. When reading brightness level just to show on screen if power state was 0 I just made it 0 in my indication system. It is a shame that I could not read this in documentation.