When i tranna locate my structure minecraft says "Could not find that structure nearby ". What i did wrong

public class MyStructure {
    public static final DeferredRegister<Structure<?>> DEFERRED_REGISTRY_STRUCTURE = DeferredRegister.create(ForgeRegistries.STRUCTURE_FEATURES, Main.MODID);
    public static final RegistryObject<Structure<NoFeatureConfig>> RUN_DOWN_HOUSE = registerStructure("run_down_house", () -> (new MyPieces(NoFeatureConfig.field_236558_a_)));

    private static <T extends Structure<?>> RegistryObject<T> registerStructure(String name, Supplier<T> structure) {
        return DEFERRED_REGISTRY_STRUCTURE.register(name, structure);
    }

    public static void setupStructures() {
        setupMapSpacingAndLand(
                RUN_DOWN_HOUSE.get(),
                new StructureSeparationSettings(10 ,
                        5 ,
                        1234567890 ),
                true);
    }

    public static <F extends Structure<?>> void setupMapSpacingAndLand(
            F structure,
            StructureSeparationSettings structureSeparationSettings,
            boolean transformSurroundingLand)
    {
        Structure.NAME_STRUCTURE_BIMAP.put(structure.getRegistryName().toString(), structure);

        if(transformSurroundingLand)
            Structure.field_236384_t_.add(structure);





        DimensionStructuresSettings.field_236191_b_.put(structure, structureSeparationSettings);

    }

 

public class MyPieces extends Structure<NoFeatureConfig> {

    public MyPieces(Codec<NoFeatureConfig> codec) {
        super(codec);
    }

    @Override
    public IStartFactory<NoFeatureConfig> getStartFactory() {
        return MyPieces.Start::new;
    }

    @Override
    public GenerationStage.Decoration getDecorationStage() {
        return GenerationStage.Decoration.SURFACE_STRUCTURES;
    }

    public static class Start extends StructureStart<NoFeatureConfig>
    {
        public Start(Structure<NoFeatureConfig> p_i225876_1_, int p_i225876_2_, int p_i225876_3_, MutableBoundingBox p_i225876_4_, int p_i225876_5_, long p_i225876_6_) {
            super(p_i225876_1_, p_i225876_2_, p_i225876_3_, p_i225876_4_, p_i225876_5_, p_i225876_6_);
        }

        @Override
        public void func_230364_a_(DynamicRegistries dynamicRegistries, ChunkGenerator chunkGenerator, TemplateManager templateManager, int cx, int cy, Biome biome, NoFeatureConfig config) {
            int x = cx << 4;
            int z = cy << 4;

            BlockPos blockpos = new BlockPos(x, 0, z);

            JigsawManager.func_242837_a(
                    dynamicRegistries,new VillageConfig(() -> dynamicRegistries.getRegistry(Registry.JIGSAW_POOL_KEY).getOrDefault(new ResourceLocation(Main.MODID,"run_down_house/start_pool")),10),
                    AbstractVillagePiece::new,chunkGenerator,templateManager,blockpos,this.components,this.rand,false,true);

            this.components.forEach(piece -> piece.offset(0, 1, 0));
            this.components.forEach(piece -> piece.getBoundingBox().minY -= 1);

            this.recalculateStructureSize();

        }
    }



}

 

public class MyConfigStructures {
    public static StructureFeature<?, ?> CONFIGURED_RUN_DOWN_HOUSE = MyStructure.RUN_DOWN_HOUSE.get().withConfiguration(IFeatureConfig.NO_FEATURE_CONFIG);

    public static void registerConfiguredStructures() {

        Registry<StructureFeature<?, ?>> registry = WorldGenRegistries.CONFIGURED_STRUCTURE_FEATURE;
        Registry.register(registry, new ResourceLocation(Main.MODID, "configured_run_down_house"), CONFIGURED_RUN_DOWN_HOUSE);
       Map<Structure<?>, StructureFeature<?, ?>> STR = ObfuscationReflectionHelper.getPrivateValue(FlatGenerationSettings.class,null,"STRUCTURES");
        STR.put(MyStructure.RUN_DOWN_HOUSE.get(), CONFIGURED_RUN_DOWN_HOUSE);
        ObfuscationReflectionHelper.setPrivateValue(FlatGenerationSettings.class,null,STR,"STRUCTURES");
        //Map<Structure<?>, StructureFeature<?, ?>> STR = ObfuscationReflectionHelper.getPrivateValue(FlatGenerationSettings.class,null,"field_202247_j");
        //STR.put(MyStructure.RUN_DOWN_HOUSE.get(), CONFIGURED_RUN_DOWN_HOUSE);
        //ObfuscationReflectionHelper.setPrivateValue(FlatGenerationSettings.class,null,STR,"field_202247_j");



    }
}

 

public Main() {

    IEventBus bus = FMLJavaModLoadingContext.get().getModEventBus();
    MyStructure.DEFERRED_REGISTRY_STRUCTURE.register(bus);
   bus.addListener(this::setup);
   IEventBus forgeBus = MinecraftForge.EVENT_BUS;
   forgeBus.addListener(EventPriority.NORMAL, this::addDimensionalSpacing);
   forgeBus.addListener(EventPriority.HIGH, this::biomeModification);

}








private void setup (final FMLCommonSetupEvent event)
{
    Networking.RegMes();
   event.enqueueWork(() -> {

       
      MyStructure.setupStructures();
      MyConfigStructures.registerConfiguredStructures();

   });
}

public void biomeModification(final BiomeLoadingEvent event) {
    event.getGeneration().getStructures().add(() -> MyConfigStructures.CONFIGURED_RUN_DOWN_HOUSE);
}

public void addDimensionalSpacing(final WorldEvent.Load event) {
    if(event.getWorld() instanceof ServerWorld){
        ServerWorld serverWorld = (ServerWorld)event.getWorld();


        if(serverWorld.getChunkProvider().getChunkGenerator() instanceof FlatChunkGenerator &&
                serverWorld.getDimensionKey().equals(World.OVERWORLD)){
            return;
        }

        Map<Structure<?>, StructureSeparationSettings> tempMap = new HashMap<>(serverWorld.getChunkProvider().generator.func_235957_b_().func_236195_a_());
        tempMap.put(MyStructure.RUN_DOWN_HOUSE.get(), DimensionStructuresSettings.field_236191_b_.get(MyStructure.RUN_DOWN_HOUSE.get()));
        serverWorld.getChunkProvider().generator.func_235957_b_().func_236195_a_();
    }

 

 

Help plz

Someone please

The problem seems to be this last line in your main class addDimensionalSpacing method:

serverWorld.getChunkProvider().generator.func_235957_b_().func_236195_a_();

You have created a tempMap where you put the structure settings but then you aren't using that tempMap at all. In fact that last line i quoted above just gets the map contained in DimensionStructureSettings and...leaves it floating in the air. Instead you are supposed to assign your tempMap to that map (which should be field_236193_d_ in DimensionStructureSettings class). You can see a lot of structure registration example here: https://github.com/Beethoven92/BetterEndForge/blob/master/src/main/java/mod/beethoven92/betterendforge/common/event/forge/WorldLoadHandler.java

Thanks for replying but field_236193_d_  now is private. How can i set it now

Use access transformers