Hello Bukkiteers! I need help developing a special plugin, which creates all-new weapons and effects and stuff. The Battle System is changed, and so a Player can only have one weapon (marked by Damage: X in the lore) in the quickbar, unless he changes it in special areas. Any ideas how to do this? I would like to use InventoryCloseEvent, but I have no idea how to use it. Could you guys help me? 1st: How do I get the player who just closed the inventory? (getPlayer() only returns a HumanEntity, And I'm not sure whether that would work. What's the difference by the way?) 2nd: Which slots do I have to check to have the quickbar controlled? 3rd: Can I get the armor of the player using the player.getEquipment().getHelmet() method right during handling the event?