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" }
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