Functions arent working

So im trying to add a function my game is detecting the datapack it self but it isnt dececting the function
filepath:
"C:\Users#####\AppData\Roaming.minecraft\saves\NbtItemsV3\datapacks\mypack\data\mypack\functions\test2.mcfunction
Game version is 1.21.5
Pack.mcmeta:
{
  "pack": {
    "pack_format": 71,
    "description": "test"
  }
}
i genuinely dont have a single clue why its not working