What do you mean? I don't see any ID setting on layout or layer properties.
If you mean just to give names to layout or each layer, i test this, no working.
To understand more, I use a ".js" file and write this:
So with a button object i test, works fine.
But can't made the same thing with objects like text, sprite, etc.
Make sense? Can work what i need or not?
Or need to edit plugins for personal purpose and add id code inside?
I don't know, just thoughts..