diff --git a/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/DefinedFunction.java b/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/DefinedFunction.java
index a34084104..923a399ad 100644
--- a/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/DefinedFunction.java
+++ b/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/DefinedFunction.java
@@ -1,6 +1,5 @@
 package com.dfsek.terra.api.structures.parser.lang.functions.def;
 
-import com.dfsek.terra.api.structures.parser.lang.Block;
 import com.dfsek.terra.api.structures.parser.lang.functions.Function;
 import com.dfsek.terra.api.structures.structure.Rotation;
 import com.dfsek.terra.api.structures.structure.buffer.Buffer;
@@ -9,12 +8,14 @@ import com.dfsek.terra.api.structures.tokenizer.Position;
 import java.util.Random;
 
 public abstract class DefinedFunction<T> implements Function<T> {
-    private final Block block;
+    private final FunctionBlock<T> block;
     private final String name;
+    private final Position position;
 
-    protected DefinedFunction(Block block, String name) {
+    protected DefinedFunction(FunctionBlock<T> block, String name, Position position) {
         this.block = block;
         this.name = name;
+        this.position = position;
     }
 
     @Override
@@ -24,11 +25,11 @@ public abstract class DefinedFunction<T> implements Function<T> {
 
     @Override
     public T apply(Buffer buffer, Rotation rotation, Random random, int recursions) {
-        return null;
+        return block.apply(buffer, rotation, random, recursions);
     }
 
     @Override
     public Position getPosition() {
-        return null;
+        return position;
     }
 }
diff --git a/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/FunctionBlock.java b/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/FunctionBlock.java
index e374d5d71..f0a55ab2f 100644
--- a/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/FunctionBlock.java
+++ b/common/src/main/java/com/dfsek/terra/api/structures/parser/lang/functions/def/FunctionBlock.java
@@ -9,7 +9,7 @@ import com.dfsek.terra.api.structures.tokenizer.Position;
 import java.util.List;
 import java.util.Random;
 
-public class FunctionBlock<T> implements Item<Block.ReturnInfo<T>> {
+public class FunctionBlock<T> implements Item<T> {
     private final List<Item<?>> items;
     private final Position position;
     private final T defaultVal;
@@ -26,15 +26,15 @@ public class FunctionBlock<T> implements Item<Block.ReturnInfo<T>> {
 
     @SuppressWarnings("unchecked")
     @Override
-    public synchronized Block.ReturnInfo<T> apply(Buffer buffer, Rotation rotation, Random random, int recursions) {
+    public synchronized T apply(Buffer buffer, Rotation rotation, Random random, int recursions) {
         for(Item<?> item : items) {
             Object result = item.apply(buffer, rotation, random, recursions);
             if(result instanceof Block.ReturnInfo) {
                 Block.ReturnInfo<T> level = (Block.ReturnInfo<T>) result;
-                if(!level.getLevel().equals(Block.ReturnLevel.NONE)) return level;
+                if(level.getLevel().equals(Block.ReturnLevel.RETURN)) return level.getData();
             }
         }
-        return new Block.ReturnInfo<>(Block.ReturnLevel.NONE, defaultVal);
+        return defaultVal;
     }
 
     @Override
diff --git a/common/src/main/java/com/dfsek/terra/config/base/ConfigPack.java b/common/src/main/java/com/dfsek/terra/config/base/ConfigPack.java
index 3fd7e09b1..2a2f4247e 100644
--- a/common/src/main/java/com/dfsek/terra/config/base/ConfigPack.java
+++ b/common/src/main/java/com/dfsek/terra/config/base/ConfigPack.java
@@ -91,10 +91,12 @@ public class ConfigPack implements LoaderRegistrar {
     private final ConfigLoader selfLoader = new ConfigLoader();
     private final Scope varScope = new Scope();
 
+    private final CheckCache checkCache;
 
 
     public ConfigPack(File folder, TerraPlugin main) throws ConfigException {
         long l = System.nanoTime();
+        this.checkCache = new CheckCache(main);
         floraRegistry = new FloraRegistry(main);
         paletteRegistry = new PaletteRegistry(main);
         treeRegistry = new TreeRegistry(main);
@@ -116,6 +118,7 @@ public class ConfigPack implements LoaderRegistrar {
 
     public ConfigPack(ZipFile file, TerraPlugin main) throws ConfigException {
         long l = System.nanoTime();
+        this.checkCache = new CheckCache(main);
         floraRegistry = new FloraRegistry(main);
         paletteRegistry = new PaletteRegistry(main);
         treeRegistry = new TreeRegistry(main);
@@ -149,7 +152,6 @@ public class ConfigPack implements LoaderRegistrar {
         abstractConfigLoader
                 .registerLoader(LootTable.class, new LootTableLoader(loader, main)); // These loaders need access to the Loader instance to get files.
 
-        CheckCache checkCache = new CheckCache(main);
         loader.open("structures/data", ".tesf").then(streams -> streams.forEach(stream -> {
             StructureScript structureScript = new StructureScript(stream, main, scriptRegistry, checkCache);
             scriptRegistry.add(structureScript.getId(), structureScript);
@@ -258,4 +260,8 @@ public class ConfigPack implements LoaderRegistrar {
     public BiomeRegistry getBiomeRegistry() {
         return biomeRegistry;
     }
+
+    public CheckCache getCheckCache() {
+        return checkCache;
+    }
 }
diff --git a/platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/structure/SpawnCommand.java b/platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/structure/SpawnCommand.java
index bf8462ae7..f604a5f5b 100644
--- a/platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/structure/SpawnCommand.java
+++ b/platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/structure/SpawnCommand.java
@@ -1,5 +1,12 @@
 package com.dfsek.terra.bukkit.command.command.structure;
 
+import com.dfsek.terra.api.structures.parser.lang.constants.NumericConstant;
+import com.dfsek.terra.api.structures.script.functions.CheckFunction;
+import com.dfsek.terra.api.structures.structure.Rotation;
+import com.dfsek.terra.api.structures.structure.buffer.StructureBuffer;
+import com.dfsek.terra.api.structures.tokenizer.Position;
+import com.dfsek.terra.api.util.FastRandom;
+import com.dfsek.terra.bukkit.BukkitWorld;
 import com.dfsek.terra.bukkit.command.DebugCommand;
 import com.dfsek.terra.bukkit.command.WorldCommand;
 import org.bukkit.Location;
@@ -23,14 +30,13 @@ public class SpawnCommand extends WorldCommand implements DebugCommand {
         int x = p.getBlockX();
         int y = p.getBlockY();
         int z = p.getBlockZ();
-        /*
-        boolean air = StructureSpawnRequirement.AIR.getInstance(world, (TerraBukkitPlugin) getMain()).matches(x, y, z);
-        boolean ground = StructureSpawnRequirement.LAND.getInstance(world, (TerraBukkitPlugin) getMain()).matches(x, y, z);
-        boolean sea = StructureSpawnRequirement.OCEAN.getInstance(world, (TerraBukkitPlugin) getMain()).matches(x, y, z);
+        Position dummy = new Position(0, 0);
+        com.dfsek.terra.api.platform.world.World w = new BukkitWorld(world);
+        String check = new CheckFunction(getMain(), new NumericConstant(0, dummy), new NumericConstant(0, dummy), new NumericConstant(0, dummy), getMain().getWorld(w).getConfig().getCheckCache(), dummy).apply(new StructureBuffer(
+                new com.dfsek.terra.api.math.vector.Location(w, x, y, z)
+        ), Rotation.NONE, new FastRandom(), 0);
 
-        sender.sendMessage("AIR: " + air + "\nLAND: " + ground + "\nOCEAN: " + sea);
-
-         */
+        sender.sendMessage("Found: " + check);
         return true;
     }