How to save and load Bool Variables from Instance Objects in the World?

Hi i need some help with my Save System. How can i even save and load the Boolean Variable from any Instance Actor in the World? For example, I placed 1 actor several times in the World/Level.

The Thing is i want to save, that when i click on them then they are “bought” (Boolean). And i want to save that they where bought or not. How am i gonna do that?

I only figured it out how to save Integer, Float or even Transform Variables but… not Booleans for Objects in my World…

Could you please help me out with that? And maybe also helping me with some Screenshots? Thank you.