Blocks dont appear in creative menu (Bedrock)

{
  "format_version": "1.17.3",
  "minecraft:block": {
    "description": {
      "identifier": "cool_things:compressed_cobble",
      "is_experimental": false,
      "register_to_creative_menu ": true
      "menu_category": {
        "category": "construction", // Tab the block is placed under
      }
    },
    "components": {
      "minecraft:map_color": "#707070",
      "minecraft:block_light_emission": 0,
      "minecraft:destroy_time": 5,
      "minecraft:explosion_resistance": 10,
      "minecraft:friction": 0.6,
      "minecraft:flammable": {
        "flame_odds": 0,
        "burn_odds": 0
      }
    }
  }
}

why doesnt this appear in the creative inventory even though it is registered?