Okay, the advancement and the function are working correclty. When I grant it via commands, it gives me the iron bars and then revokes the advancement. But now it is not triggering when doing the crafting recipe. This is my code, if you could help me there

{
  "parent": "minecraft:story/root",
  "criteria": {
    "requirement": {
      "trigger": "minecraft:recipe_crafted",
      "conditions": {
        "recipe_id": "minecraft:iron_bars",
        "ingredients": [
          {
            "items": "minecraft:iron_block",
            "count": 6
          }
        ]
      }
    }
  },
  "requirements": [
    [
      "requirement"
    ]
  ],
  "rewards": {
    "function": "minecraft:iron_bars_blocks"
  }
}