diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DCallableObject.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DCallableObject.java
index ef8c6ec..6f21736 100644
--- a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DCallableObject.java
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DCallableObject.java
@@ -4,6 +4,7 @@ import io.gitlab.jfronny.muscript.ast.DynamicExpr;
 import io.gitlab.jfronny.muscript.ast.dynamic.*;
 import io.gitlab.jfronny.muscript.compiler.CodeLocation;
 import io.gitlab.jfronny.muscript.data.dynamic.*;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.DCallableLens;
 
 import java.util.List;
 import java.util.Map;
@@ -21,7 +22,7 @@ public record DCallableObject(Map<String, ? extends Dynamic> value, DCallable ca
 
     @Override
     public DCallable asCallable() {
-        return callable;
+        return new DCallableLens(this, callable::getValue);
     }
 
     @Override
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DDate.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DDate.java
index 3cb1485..38fe1bd 100644
--- a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DDate.java
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DDate.java
@@ -7,6 +7,8 @@ import io.gitlab.jfronny.muscript.ast.literal.NumberLiteral;
 import io.gitlab.jfronny.muscript.compiler.CodeLocation;
 import io.gitlab.jfronny.muscript.compiler.ExprWriter;
 import io.gitlab.jfronny.muscript.data.dynamic.*;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.DNumberLens;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.DStringLens;
 
 import java.io.IOException;
 import java.time.LocalDate;
@@ -31,7 +33,7 @@ public record DDate(Supplier<LocalDate> date) implements DObject {
 
     @Override
     public DString asString() {
-        return DFinal.of(toString());
+        return new DStringLens(this, this::toString);
     }
 
     @Override
@@ -41,7 +43,7 @@ public record DDate(Supplier<LocalDate> date) implements DObject {
 
     @Override
     public DNumber asNumber() {
-        return DFinal.of(date.get().toEpochDay());
+        return new DNumberLens(this, () -> date.get().toEpochDay());
     }
 
     @Override
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DEnum.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DEnum.java
index ebdae52..2b62958 100644
--- a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DEnum.java
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DEnum.java
@@ -7,6 +7,7 @@ import io.gitlab.jfronny.muscript.ast.dynamic.Variable;
 import io.gitlab.jfronny.muscript.ast.literal.StringLiteral;
 import io.gitlab.jfronny.muscript.compiler.CodeLocation;
 import io.gitlab.jfronny.muscript.data.dynamic.*;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.*;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
@@ -44,7 +45,7 @@ public record DEnum(Map<String, ? extends Dynamic> values, @Nullable DEnumEntry
 
     @Override
     public DList asList() {
-        return DFinal.of(List.copyOf(values.values()));
+        return new DListLens(this, () -> List.copyOf(values.values()));
     }
 
     @Override
@@ -54,7 +55,7 @@ public record DEnum(Map<String, ? extends Dynamic> values, @Nullable DEnumEntry
 
     @Override
     public DString asString() {
-        return value != null ? value : DFinal.of(StringFormatter.toString(values));
+        return value != null ? value : new DStringLens(this, () -> StringFormatter.toString(values));
     }
 
     @Override
@@ -98,7 +99,7 @@ public record DEnum(Map<String, ? extends Dynamic> values, @Nullable DEnumEntry
 
         @Override
         public DNumber asNumber() {
-            return DFinal.of(index);
+            return new DNumberLens(this, this::index);
         }
 
         @Override
@@ -108,7 +109,7 @@ public record DEnum(Map<String, ? extends Dynamic> values, @Nullable DEnumEntry
 
         @Override
         public DBool asBool() {
-            return DFinal.of(selected);
+            return new DBoolLens(this, this::selected);
         }
     }
 }
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DTime.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DTime.java
index 38ed0e6..5ebb42e 100644
--- a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DTime.java
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/additional/DTime.java
@@ -7,6 +7,8 @@ import io.gitlab.jfronny.muscript.ast.literal.NumberLiteral;
 import io.gitlab.jfronny.muscript.compiler.CodeLocation;
 import io.gitlab.jfronny.muscript.compiler.ExprWriter;
 import io.gitlab.jfronny.muscript.data.dynamic.*;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.DNumberLens;
+import io.gitlab.jfronny.muscript.data.dynamic.lens.DStringLens;
 
 import java.io.IOException;
 import java.time.LocalTime;
@@ -31,7 +33,7 @@ public record DTime(Supplier<LocalTime> time) implements DObject {
 
     @Override
     public DString asString() {
-        return DFinal.of(toString());
+        return new DStringLens(this, this::toString);
     }
 
     @Override
@@ -41,7 +43,7 @@ public record DTime(Supplier<LocalTime> time) implements DObject {
 
     @Override
     public DNumber asNumber() {
-        return DFinal.of(time.get().toSecondOfDay());
+        return new DNumberLens(this, () -> time.get().toSecondOfDay());
     }
 
     @Override
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DBoolLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DBoolLens.java
new file mode 100644
index 0000000..f2ac818
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DBoolLens.java
@@ -0,0 +1,27 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.BoolExpr;
+import io.gitlab.jfronny.muscript.data.dynamic.DBool;
+import io.gitlab.jfronny.muscript.data.dynamic.Dynamic;
+
+import java.util.Objects;
+import java.util.function.BooleanSupplier;
+
+public final class DBoolLens extends DLens implements DBool {
+    private final BooleanSupplier value;
+
+    public DBoolLens(Dynamic source, BooleanSupplier value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public Boolean getValue() {
+        return value.getAsBoolean();
+    }
+
+    @Override
+    public BoolExpr toExpr() {
+        return source.toExpr().asBoolExpr();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DCallableLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DCallableLens.java
new file mode 100644
index 0000000..d5f31f2
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DCallableLens.java
@@ -0,0 +1,27 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.Expr;
+import io.gitlab.jfronny.muscript.data.dynamic.*;
+
+import java.util.Objects;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+public final class DCallableLens extends DLens implements DCallable {
+    private final Supplier<Function<DList, Dynamic>> value;
+
+    public DCallableLens(Dynamic source, Supplier<Function<DList, Dynamic>> value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public Function<DList, Dynamic> getValue() {
+        return value.get();
+    }
+
+    @Override
+    public Expr<?> toExpr() {
+        return source.toExpr();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DLens.java
new file mode 100644
index 0000000..0e6bb10
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DLens.java
@@ -0,0 +1,95 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.compiler.ExprWriter;
+import io.gitlab.jfronny.muscript.data.dynamic.*;
+
+import java.io.IOException;
+import java.util.Objects;
+
+public abstract sealed class DLens implements DynamicBase permits DBoolLens, DCallableLens, DListLens, DNumberLens, DObjectLens, DStringLens {
+    protected final Dynamic source;
+
+    protected DLens(Dynamic source) {
+        this.source = Objects.requireNonNull(source);
+    }
+
+    @Override
+    public void serialize(ExprWriter writer) throws IOException {
+        source.serialize(writer);
+    }
+
+    @Override
+    public boolean isBool() {
+        return source.isBool();
+    }
+
+    @Override
+    public DBool asBool() {
+        return source.asBool();
+    }
+
+    @Override
+    public boolean isNumber() {
+        return source.isNumber();
+    }
+
+    @Override
+    public DNumber asNumber() {
+        return source.asNumber();
+    }
+
+    @Override
+    public boolean isString() {
+        return source.isString();
+    }
+
+    @Override
+    public DString asString() {
+        return source.asString();
+    }
+
+    @Override
+    public boolean isObject() {
+        return source.isObject();
+    }
+
+    @Override
+    public DObject asObject() {
+        return source.asObject();
+    }
+
+    @Override
+    public boolean isList() {
+        return source.isList();
+    }
+
+    @Override
+    public DList asList() {
+        return source.asList();
+    }
+
+    @Override
+    public boolean isCallable() {
+        return source.isCallable();
+    }
+
+    @Override
+    public DCallable asCallable() {
+        return source.asCallable();
+    }
+
+    @Override
+    public int hashCode() {
+        return source.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return obj instanceof DLens lens ? source.equals(lens.source) : source.equals(obj);
+    }
+
+    @Override
+    public String toString() {
+        return source.toString();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DListLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DListLens.java
new file mode 100644
index 0000000..bd4db97
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DListLens.java
@@ -0,0 +1,28 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.DynamicExpr;
+import io.gitlab.jfronny.muscript.data.dynamic.DList;
+import io.gitlab.jfronny.muscript.data.dynamic.Dynamic;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Supplier;
+
+public final class DListLens extends DLens implements DList {
+    private final Supplier<List<? extends Dynamic>> value;
+
+    public DListLens(Dynamic source, Supplier<List<? extends Dynamic>> value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public List<? extends Dynamic> getValue() {
+        return value.get();
+    }
+
+    @Override
+    public DynamicExpr toExpr() {
+        return source.toExpr().asDynamicExpr();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DNumberLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DNumberLens.java
new file mode 100644
index 0000000..fa941a4
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DNumberLens.java
@@ -0,0 +1,27 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.NumberExpr;
+import io.gitlab.jfronny.muscript.data.dynamic.DNumber;
+import io.gitlab.jfronny.muscript.data.dynamic.Dynamic;
+
+import java.util.Objects;
+import java.util.function.DoubleSupplier;
+
+public final class DNumberLens extends DLens implements DNumber {
+    private final DoubleSupplier value;
+
+    public DNumberLens(Dynamic source, DoubleSupplier value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public Double getValue() {
+        return value.getAsDouble();
+    }
+
+    @Override
+    public NumberExpr toExpr() {
+        return source.toExpr().asNumberExpr();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DObjectLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DObjectLens.java
new file mode 100644
index 0000000..02c8b72
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DObjectLens.java
@@ -0,0 +1,28 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.DynamicExpr;
+import io.gitlab.jfronny.muscript.data.dynamic.DObject;
+import io.gitlab.jfronny.muscript.data.dynamic.Dynamic;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Supplier;
+
+public final class DObjectLens extends DLens implements DObject {
+    private final Supplier<Map<String, ? extends Dynamic>> value;
+
+    public DObjectLens(Dynamic source, Supplier<Map<String, ? extends Dynamic>> value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public Map<String, ? extends Dynamic> getValue() {
+        return value.get();
+    }
+
+    @Override
+    public DynamicExpr toExpr() {
+        return source.toExpr().asDynamicExpr();
+    }
+}
diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DStringLens.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DStringLens.java
new file mode 100644
index 0000000..7f5a9e4
--- /dev/null
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/data/dynamic/lens/DStringLens.java
@@ -0,0 +1,27 @@
+package io.gitlab.jfronny.muscript.data.dynamic.lens;
+
+import io.gitlab.jfronny.muscript.ast.StringExpr;
+import io.gitlab.jfronny.muscript.data.dynamic.DString;
+import io.gitlab.jfronny.muscript.data.dynamic.Dynamic;
+
+import java.util.Objects;
+import java.util.function.Supplier;
+
+public final class DStringLens extends DLens implements DString {
+    private final Supplier<String> value;
+
+    public DStringLens(Dynamic source, Supplier<String> value) {
+        super(source);
+        this.value = Objects.requireNonNull(value);
+    }
+
+    @Override
+    public String getValue() {
+        return value.get();
+    }
+
+    @Override
+    public StringExpr toExpr() {
+        return source.toExpr().asStringExpr();
+    }
+}