It doesn't appear to possible to change the of multiple objects with one trigger. You have to create a separate individual trigger action for each object.
Let's say I want multiple objects to change their state when a variable changes, I can't set up a trigger to 'Change State of...Objects 1 -10' when variable 'x' changes. I would have to do it for Object 1 then copy and paste it for the rest and change the object name.
Any chance I'm missing something and this actually can be done? Thanks