Scripts

Hello, is it possible to implement a feature where, upon touching an object, the hero's entire army disappears, leaving only a small portion of the creatures? For example, if a hero has 55 archers, 7 griffins, and 22 peasants, touching the object would leave the hero with only 3 peasants. However, the hero's army is initially unknown; he has been gathering it for weeks, the creatures' upgrades are unknown, and the quantity is also unknown, but after touching the object, he will only have a couple of warriors left. I would be very grateful for any help. (I couldn't come up with anything myself in 2 hours).