Crafting Tweaks

I am trying to make a crafting tweaks datapack. Currently I am trying to make universal dyeing of items, and none of my crafting tweaks are working. I have messed with data packs before so I am pretty certain the files are all in the right place, so I was wondering if something got changed in 1.21 for how files are set up, or what the values are supposed to be.
Here is one of the crafting recipes:
{
    "type": "minecraft:crafting_shaped",
    "pattern": [
        "MMM",
        "MDM",
        "MMM"
    ],
    "key": {
        "M": {
            "item": "minecraft:black_carpet"
        },
        "D": {
            "item": "minecraft:blue_dye"
        }
    },
    "result": {
        "item": "minecraft:blue_carpet",
        "count": 8
    }
}
and here is my pack.mcmeta:
{
    "pack": {
      "pack_format": 48,
      "description": "Universal Dyeing Data Pack"
    }
  }