For some reason this doesn't work ```js
Item.of('minecraft:diamond_chestplate').addAttributeModifier("minecraft:generic.armor",new Internal.AttributeModifier('Armor',5,Internal.AttributeModifier$Operation.ADDITION),Internal.EquipmentSlot.MAINHAND)
``````[09:02:54] [ERROR] ! leveling.js#47: Error in 'ItemEvents.rightClicked': ReferenceError: "Internal" is not defined.```


