Hello is this code valid? i 'm trying to nerf slime in my workd but dont work

nerf-slime:
group:
types:
- "slime"
count: 5
distance: same-chunk
actions:
- kill

As discussed on Spigot, make sure it's indented correctly like so:

nerf-slime:
  group:
    types:
      - "slime"
    count: 5
    distance: same-chunk
  actions:
    - kill

And note that when large slimes are killed they will split into three smaller slimes, so it may be more appropriate to use remove instead of kill in this case