inventory slot help? please? SpigotMC

Hello, I'm just started with VS and I need some it possible to put several items in the same slot of the inventory?

Slot?, one slot, minecraft one slot, one inventory slot, beating minecraft with one slot, 1

inventory slot Hello, I'm just started with VS and I need some it possible to put several items in the same slot of the inventory?

civic69 slot inventory slot instead of inside of the inventory box Any idea as to what I am doing wrong? using System