How do I make a list of hidden objects?

How can I make a list of yet unfound objects and refer to this list when player uses hint?

You could try with an array

You could try with an array

Yeah... i understand, but how exactly i would add an object in the array and how to refer the object from the array later?

Right now i have this, but it doesnt fill the array with objects uid

I imagined it more like an inventory where you tick off tasks. So how does the game work ? Maybe it will be better if you fill the array from a predetermined sheet which is a list of items if you know the items in advance. Then you can have a second column for found/unfound which would be like a 0 or 1.

Your logic looks reasonable, maybe the array size is not set and you need to add more columns? If changing one to found later, you could grab the UID of the object and search for it in the array then delete it.