Creating towers

How to i spawn a object inisde a object randomly,i have multiples block and i want the game to pick a random block and spawn a object inside of it

Welcome. Do you have any screengrabs of your scene or code. I can’t get a clear idea of what you want to do. There is a pick a random object but IDK if you want a random object within another random object. Or whether you want random but without repeating. Have you looked at the way the cards are dealt in the pairs example?

Open pairs example in online editor