spawn.json not working, zombie spawns without any items even tho they should have them
[
{
"onjoin": true,
"mob": ["minecraft:zombie"],
"armorhelmet": ["minecraft:iron_helmet", "minecraft:diamond_helmet", "minecraft:chainmail_helmet"],
"armorchest": ["minecraft:iron_helmet", "minecraft:diamond_helmet", "minecraft:chainmail_helmet"],
"armorlegs": ["minecraft:iron_helmet", "minecraft:diamond_helmet", "minecraft:chainmail_helmet"],
"armorboots": ["minecraft:iron_helmet", "minecraft:diamond_helmet", "minecraft:chainmail_helmet"],
"helditem": ["minecraft:diamond_sword", "minecraft:iron_sword", "minecraft:iron_axe", "minecraft:crossbow", "minecraft:bow"]

}
]