{
  "criteria": {
    "requirement": {
      "trigger": "minecraft:using_item",
      "conditions": {
        "player": [
        ],
        "item": {
          "items": [
            "minecraft:firework_rocket"
          ]
        }
      }
    }
  },
  "rewards": {
    "function": "a:a"
  }
}
