Yeah, it looks like you did it right.
Unfortunately, it won't let me "toggle on/off" the red object.
I guess there might be some misunderstanding, here is how the screen looks like:
As you can see, that according to my event, whenever I press virus(1-12), red object shows up behind it.
What I'm after is I want this object to be destroyed if I press on it again.
For example, when I click on virus1, the red box shows up, when i click on it second time, it is being destroyed, while preserving other selections.
For the sake of simplicity, I've created a new project with the following structure
Hi, Hello and Hey are separated text objects that belong to Family1