diff --git a/src/main/java/me/topchetoeu/jscript/common/environment/Environment.java b/src/main/java/me/topchetoeu/jscript/common/environment/Environment.java
index 02302d0..74be652 100644
--- a/src/main/java/me/topchetoeu/jscript/common/environment/Environment.java
+++ b/src/main/java/me/topchetoeu/jscript/common/environment/Environment.java
@@ -3,7 +3,6 @@ package me.topchetoeu.jscript.common.environment;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
-import java.util.Random;
 import java.util.Set;
 import java.util.function.Supplier;
 
@@ -12,71 +11,13 @@ public class Environment {
     private final Map<Key<Object>, Object> map = new HashMap<>();
     private final Set<Key<Object>> hidden = new HashSet<>();
 
-    private final Map<MultiKey<Object>, Set<Object>> multi = new HashMap<>();
-    private final Map<MultiKey<Object>, Set<Object>> multiHidden = new HashMap<>();
-
-    @SuppressWarnings("unchecked")
-    private <T> Set<T> getAll(MultiKey<T> key, boolean forceClone) {
-        Set<T> parent = null, child = null;
-        boolean cloned = false;
-
-        if (this.parent != null && !hidden.contains(key)) {
-            parent = this.parent.getAll(key, false);
-            if (parent.size() == 0) parent = null;
-            else if (multiHidden.containsKey(key)) {
-                parent = new HashSet<>(parent);
-                parent.removeAll(multiHidden.get(key));
-                cloned = true;
-            }
-        }
-        if (multi.containsKey(key)) {
-            child = (Set<T>)multi.get(key);
-            if (child.size() == 0) child = null;
-        }
-
-        if (!forceClone) {
-            if (parent == null && child == null) return new HashSet<>();
-            if (parent == null && child != null) return child;
-            if (parent != null && child == null) return parent;
-        }
-
-        if (!cloned) parent = new HashSet<>();
-        parent.addAll(child);
-        return parent;
-    }
-    private <T> T getMulti(MultiKey<T> key) {
-        return key.of(getAll(key, false));
-    }
-    private boolean hasMulti(MultiKey<?> key) {
-        return getAll(key, false).size() > 0;
-    }
-
-    @SuppressWarnings("all")
-    private <T> Environment addMulti(MultiKey<T> key, T value) {
-        if (!multi.containsKey(key)) {
-            if (hidden.contains(key)) {
-                multiHidden.put((MultiKey)key, (Set)parent.getAll(key, true));
-                hidden.remove(key);
-            }
-
-            multi.put((MultiKey)key, new HashSet<>());
-        }
-
-        multi.get(key).add(value);
-        return this;
-    }
-
     @SuppressWarnings("unchecked")
     public <T> T get(Key<T> key) {
-        if (key instanceof MultiKey) return getMulti((MultiKey<T>)key);
-
         if (map.containsKey(key)) return (T)map.get(key);
         else if (!hidden.contains(key) && parent != null) return parent.get(key);
         else return null;
     }
     public boolean has(Key<?> key) {
-        if (key instanceof MultiKey) return hasMulti((MultiKey<?>)key);
-
         if (map.containsKey(key)) return true;
         else if (!hidden.contains(key) && parent != null) return parent.has(key);
         else return false;
@@ -97,8 +38,6 @@ public class Environment {
 
     @SuppressWarnings("unchecked")
     public <T> Environment add(Key<T> key, T val) {
-        if (key instanceof MultiKey) return add(key, val);
-
         map.put((Key<Object>)key, val);
         hidden.remove(key);
         return this;
@@ -108,14 +47,6 @@ public class Environment {
     }
     @SuppressWarnings("all")
     public Environment addAll(Map<Key<?>, ?> map, boolean iterableAsMulti) {
-        for (var pair : map.entrySet()) {
-            if (iterableAsMulti && pair.getKey() instanceof MultiKey && pair.getValue() instanceof Iterable) {
-                for (var val : (Iterable<?>)pair.getValue()) {
-                    addMulti((MultiKey<Object>)pair.getKey(), val);
-                }
-            }
-            else add((Key<Object>)pair.getKey(), pair.getValue());
-        }
         map.putAll((Map)map);
         hidden.removeAll(map.keySet());
         return this;
@@ -127,26 +58,9 @@ public class Environment {
     @SuppressWarnings("unchecked")
     public Environment remove(Key<?> key) {
         map.remove(key);
-        multi.remove(key);
-        multiHidden.remove(key);
         hidden.add((Key<Object>)key);
         return this;
     }
-    @SuppressWarnings("all")
-    public <T> Environment remove(MultiKey<T> key, T val) {
-        if (multi.containsKey(key)) {
-            multi.get(key).remove(val);
-            multiHidden.get(key).add(val);
-
-            if (multi.get(key).size() == 0) {
-                multi.remove(key);
-                multiHidden.remove(key);
-                hidden.add((Key)key);
-            }
-        }
-
-        return this;
-    }
 
     public <T> T init(Key<T> key, T val) {
         if (!has(key)) this.add(key, val);
@@ -180,8 +94,4 @@ public class Environment {
     public static Environment empty() {
         return new Environment();
     }
-
-    public static int nextId() {
-        return new Random().nextInt();
-    }
 }
diff --git a/src/main/java/me/topchetoeu/jscript/common/environment/Key.java b/src/main/java/me/topchetoeu/jscript/common/environment/Key.java
index 1bb96b3..60470dd 100644
--- a/src/main/java/me/topchetoeu/jscript/common/environment/Key.java
+++ b/src/main/java/me/topchetoeu/jscript/common/environment/Key.java
@@ -1,7 +1,7 @@
 package me.topchetoeu.jscript.common.environment;
 
-public interface Key<T> {
+public final class Key<T> {
     public static <T> Key<T> of() {
-        return new Key<>() { };
+        return new Key<>();
     }
 }
diff --git a/src/main/java/me/topchetoeu/jscript/common/environment/MultiKey.java b/src/main/java/me/topchetoeu/jscript/common/environment/MultiKey.java
deleted file mode 100644
index 79e8404..0000000
--- a/src/main/java/me/topchetoeu/jscript/common/environment/MultiKey.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package me.topchetoeu.jscript.common.environment;
-
-import java.util.Set;
-
-public interface MultiKey<T> extends Key<T> {
-    public T of(Set<T> values);
-}