[1.12.2] Generate ore in custom dimension of another mod

Hello! How generate ore in custom dimension of another mod? (In my case, I'm trying to add generation to the Misty World by @Liahim)

In the generator, in the generate method, I did such checking if

(world.provider.getDimension () == Mist.dimensionID)

 and such if

(world.provider.getDimension () == 69)

Does not work(

In general, here is my generator, and I'm trying to add the generation of my ore to a measurement from another mod:

public class MistyThaumcraftWorldGenerator implements IWorldGenerator
{
    private WorldGenerator ore_amber;
  
    public MistyThaumcraftWorldGenerator()
    {
        ore_amber = new WorldGenMinable(RegisterBlocks.ore_amber.getDefaultState(), 9);
    }

    public void generate(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider)
    {
        if (world.provider.getDimension() == Mist.dimensionID) {

            runGenerator(ore_amber, world, random, chunkX, chunkZ, 80, 5, 180);     

        }
      
    }
  
    private void runGenerator(WorldGenerator gen, World world, Random rand, int chunkX, int chunkZ, int chance, int minHeight, int maxHeight)
    {
        if(minHeight > maxHeight || minHeight < 0 || maxHeight > 256) throw new IllegalArgumentException("Ore generated out of bounds");
        int heightDiff = maxHeight - minHeight + 1;
      
        for(int i = 0; i < chance; i++)
        {
            int x = chunkX * 8 + rand.nextInt(8);
            int y = minHeight + rand.nextInt(heightDiff);
            int z = chunkZ * 8 + rand.nextInt(8);
          
            gen.generate(world, rand, new BlockPos(x, y, z));
        }
    }
}