We should be able to do these:
-Adding or inserting value, string, boolean, array or structure variables onto any structure with events.
-Getting any variables from the objects while doing that as well. NOT only with the scene and global variables.
But they’re only works on arrays 
I’m not sure I understand. Data can’t be added to a structure like an array. Each value needs a child name. If you wanted to, you could have a structure that contained an array. Or useba dynamically named structure.
IDK what you mean by the 2nd question unless you’re referring to the for each child event that doesn’t work with objects. Otherwise, object variables behave like scene or global variables.
Can you provide senerios or examples?