custom enchantment doesnt work

    "anvil_cost": 1,
    "description": {
        "text": "Bigness",
        "font": "illageralt"
    },
    "max_level": 2,
    "slots": [
        "armor"
    ],
    "weight": 2,
    "max_cost": {
        "base": 10,
        "per_level_above_first": 20
    },
    "min_cost": {
        "base": 5,
        "per_level_above_first": 15
    },
    "effects": {
        "minecraft:attributes": [
            {
                "attribute": "scale",
                "amount": {
                    "type": "linear",
                    "base": 0.05,
                    "per_level_above_first": 0.05
                },
                "operation": "add_value",
                "id": "yafaland:bigness"
            }
        ]
    },
    "supported_items": "#minecraft:enchantable/armor"
}```