Solved World generator not working?

when I delete the world folder, it recreates it, but with the vanilla world generator. I want my own generator to make the world. How do I do that?

main:

Code:

package me.Darkolythe.MiningWorld;

import org.bukkit.generator.ChunkGenerator;
import org.bukkit.plugin.java.JavaPlugin;

public class MiningWorld extends JavaPlugin {
   
    @Override
    public void onEnable() {
        // TODO Insert logic to be performed when the plugin is enabled
    }
   
    @Override
    public void onDisable() {
        // TODO Insert logic to be performed when the plugin is disabled
    }
   
    @Override
    public ChunkGenerator getDefaultWorldGenerator(String worldName, String id) {
        return new GenerateWorld();
    }
   
}

Code:

package me.Darkolythe.MiningWorld;

import java.util.Random;

import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.generator.ChunkGenerator;
import org.bukkit.util.noise.SimplexOctaveGenerator;

public class GenerateWorld extends ChunkGenerator {
    int currentHeight = 50;

    @Override
    public ChunkData generateChunkData(World world, Random random, int chunkX, int chunkZ, BiomeGrid biome) {
        System.out.println("gen");
        SimplexOctaveGenerator generator = new SimplexOctaveGenerator(new Random(world.getSeed()), 8);
        ChunkData chunk = createChunkData(world);
        generator.setScale(0.005D);

        for (int X = 0; X < 16; X++)
            for (int Z = 0; Z < 16; Z++) {
                currentHeight = (int) (generator.noise(chunkX*16+X, chunkZ*16+Z, 0.5D, 0.5D)*15D+50D);
                chunk.setBlock(X, currentHeight, Z, Material.GRASS);
                chunk.setBlock(X, currentHeight-1, Z, Material.DIRT);
                for (int i = currentHeight-2; i > 0; i--)
                    chunk.setBlock(X, i, Z, Material.STONE);
                chunk.setBlock(X, 0, Z, Material.BEDROCK);
            }
        return chunk;
    }
}

plugin.yml:

Code:

name: MiningWorld
version: 1.0.0
author: Darkolythe
main: me.Darkolythe.MiningWorld.MiningWorld
api-version: 1.13
load: startup
description: This plugin generates a mining world
worlds:
  world:
    generator: MiningWorld

 

@timtower
so I removed it from my plugin.yml, and now my bukkit.yml looks like this:

Code:

worlds:
  world:
    generator: MiningWorld

nothing changed

EDIT:
never mind, Im just dumb. the bukkit.yml already exists in the server folder.

all is good