diff --git a/tools/js-class-c-struct-transpiler/test/build/Login.js b/tools/js-class-c-struct-transpiler/test/build/Login.js
index 14b91d8..d4b3593 100644
--- a/tools/js-class-c-struct-transpiler/test/build/Login.js
+++ b/tools/js-class-c-struct-transpiler/test/build/Login.js
@@ -16,7 +16,12 @@ class Login {
      * @param {string} v sets the value of Email
      */    
     set Email(v) {
-        this._data.set(this._encoder.encode(v), 0);
+        if (v.length > 256) {
+          throw new Error("input is larger than buffer size of 256");
+        }
+        const tmp = new Uint8Array(new ArrayBuffer(256));
+        tmp.set(this._encoder.encode(v))
+        this._ptr.set(tmp.buffer, 0);
     }
     /**
      * Password of the user
@@ -30,25 +35,23 @@ class Login {
      * @param {string} v sets the value of Password
      */    
     set Password(v) {
-        this._data.set(this._encoder.encode(v), 256);
-    }
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
+        if (v.length > 64) {
+          throw new Error("input is larger than buffer size of 64");
+        }
+        const tmp = new Uint8Array(new ArrayBuffer(64));
+        tmp.set(this._encoder.encode(v))
+        this._ptr.set(tmp.buffer, 256);
     }
     /**
      * Constructs a new Login
      * 
      * @param {{Email: string, Password: string, }} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = 320;
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
         
         this._encoder = new TextEncoder(); 
         this._decoder = new TextDecoder();          
diff --git a/tools/js-class-c-struct-transpiler/test/build/LoginRequest.js b/tools/js-class-c-struct-transpiler/test/build/LoginRequest.js
index fc9269b..d0c4e7e 100644
--- a/tools/js-class-c-struct-transpiler/test/build/LoginRequest.js
+++ b/tools/js-class-c-struct-transpiler/test/build/LoginRequest.js
@@ -1,7 +1,7 @@
 import Login from "./Login"
 /**
  * @typedef {Object} LoginRequest a request for a login
- * @property Login Login user login info
+ * @property {Login} Login user login info
  */
 class LoginRequest {
     /**
@@ -16,25 +16,18 @@ class LoginRequest {
      * @param {Login} sets the value of Login
      */
     set Login(v) {
-        this._data.set(v.bytes(), 0);
-    }
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
+        this._ptr.set(v._ptr, 0);
     }
     /**
      * Constructs a new LoginRequest
      * 
      * @param {{Login: Login, }} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = 320;
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
                   
         for (const key of Object.keys(init)) {
           this[key] = init[key];
diff --git a/tools/js-class-c-struct-transpiler/test/build/LoginResponse.js b/tools/js-class-c-struct-transpiler/test/build/LoginResponse.js
index 8ca8868..808dd7e 100644
--- a/tools/js-class-c-struct-transpiler/test/build/LoginResponse.js
+++ b/tools/js-class-c-struct-transpiler/test/build/LoginResponse.js
@@ -1,6 +1,6 @@
 /**
  * @typedef {Object} LoginResponse the response from a login request
- * @property boolean logical login was successful or not
+ * @property {boolean} logical login was successful or not
  */
 class LoginResponse {
     /**
@@ -8,32 +8,25 @@ class LoginResponse {
      * @return {boolean} gets the value of success
      */
     get success() {
-        return this._data.getboolean(0, true);
+        return Boolean(this._data.getInt8(0, true));
     }
     /**
      * login was successful or not
      * @param {boolean} sets the value of success
      */
     set success(v) {
-        return this._data.setboolean(0, v, true);
-    }
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
+        return this._data.setInt8(0, v ? 1 : 0, true);
     }
     /**
      * Constructs a new LoginResponse
      * 
      * @param {{success: boolean, }} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = 1;
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
                   
         for (const key of Object.keys(init)) {
           this[key] = init[key];
diff --git a/tools/js-class-c-struct-transpiler/test/build/User.js b/tools/js-class-c-struct-transpiler/test/build/User.js
index 1aa8e92..3c87ee0 100644
--- a/tools/js-class-c-struct-transpiler/test/build/User.js
+++ b/tools/js-class-c-struct-transpiler/test/build/User.js
@@ -3,8 +3,8 @@ import Vector3 from "./Vector3"
 /**
  * @typedef {Object} User The user object
  * @property {string} Name Name of the user
- * @property Login Login user login info
- * @property Vector3 Vector3 last logout position of user
+ * @property {Login} Login user login info
+ * @property {Vector3} Vector3 last logout position of user
  */
 class User {
     /**
@@ -19,7 +19,12 @@ class User {
      * @param {string} v sets the value of Name
      */    
     set Name(v) {
-        this._data.set(this._encoder.encode(v), 0);
+        if (v.length > 24) {
+          throw new Error("input is larger than buffer size of 24");
+        }
+        const tmp = new Uint8Array(new ArrayBuffer(24));
+        tmp.set(this._encoder.encode(v))
+        this._ptr.set(tmp.buffer, 0);
     }
     /**
      * user login info
@@ -33,7 +38,7 @@ class User {
      * @param {Login} sets the value of Login
      */
     set Login(v) {
-        this._data.set(v.bytes(), 24);
+        this._ptr.set(v._ptr, 24);
     }
     /**
      * last logout position of user
@@ -47,25 +52,18 @@ class User {
      * @param {Vector3} sets the value of Position
      */
     set Position(v) {
-        this._data.set(v.bytes(), 344);
-    }
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
+        this._ptr.set(v._ptr, 344);
     }
     /**
      * Constructs a new User
      * 
      * @param {{Name: string, Login: Login, Position: Vector3, }} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = 356;
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
         
         this._encoder = new TextEncoder(); 
         this._decoder = new TextDecoder();          
diff --git a/tools/js-class-c-struct-transpiler/test/build/Vector3.js b/tools/js-class-c-struct-transpiler/test/build/Vector3.js
index 946a68d..d6079ce 100644
--- a/tools/js-class-c-struct-transpiler/test/build/Vector3.js
+++ b/tools/js-class-c-struct-transpiler/test/build/Vector3.js
@@ -1,8 +1,8 @@
 /**
  * @typedef {Object} Vector3 A representation of a position in 3D space
- * @property Float32 f32 x coordinate
- * @property Float32 f32 y coordinate
- * @property Float32 f32 z coordinate
+ * @property {Float32} f32 x coordinate
+ * @property {Float32} f32 y coordinate
+ * @property {Float32} f32 z coordinate
  */
 class Vector3 {
     /**
@@ -47,23 +47,16 @@ class Vector3 {
     set z(v) {
         return this._data.setFloat32(8, v, true);
     }
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
-    }
     /**
      * Constructs a new Vector3
      * 
      * @param {{x: Float32, y: Float32, z: Float32, }} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = 12;
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
                   
         for (const key of Object.keys(init)) {
           this[key] = init[key];
diff --git a/tools/js-class-c-struct-transpiler/test/schema.json b/tools/js-class-c-struct-transpiler/test/schema.json
index 2c0aaa6..ec957e1 100644
--- a/tools/js-class-c-struct-transpiler/test/schema.json
+++ b/tools/js-class-c-struct-transpiler/test/schema.json
@@ -72,7 +72,7 @@
     "members": {
       "success": {
         "type": "logical",
-        "kind": "scalar",
+        "kind": "logical",
         "comment": "login was successful or not"
       }
     }
diff --git a/tools/js-class-c-struct-transpiler/test/test_server.js b/tools/js-class-c-struct-transpiler/test/test_server.js
index 3a41773..0d3eb91 100644
--- a/tools/js-class-c-struct-transpiler/test/test_server.js
+++ b/tools/js-class-c-struct-transpiler/test/test_server.js
@@ -1,5 +1,7 @@
-import LoginRequest from "./build/LoginRequest"
-import LoginResponse from "./build/LoginResponse"
+import LoginRequest from "./build/LoginRequest";
+import LoginResponse from "./build/LoginResponse";
+import User from "./build/User";
+import Vector3 from "./build/Vector3";
 
 var decoder = new TextDecoder("utf-8");
 var port = 8089;
@@ -18,8 +20,15 @@ wss.on("connection", function (ws) {
       console.log(entity.Login.Email);
       console.log(entity.Login.Password);
 
-      const response = new LoginResponse({success: true});
-      ws.send(response.bytes, { binary: true }); // Echo back the received message
+      const user = new User({
+        Name: "Test User",
+        Login: entity.Login,
+        Position: new Vector3({ x: 0, y: 0, z: 0 }),
+      });
+      console.log(user.Name);
+
+      const response = new LoginResponse({ success: true });
+      ws.send(response._ptr, { binary: true }); // Echo back the received message
     }
   });
 });
diff --git a/tools/js-class-c-struct-transpiler/transpile.js b/tools/js-class-c-struct-transpiler/transpile.js
index ada8bc9..7a7726c 100644
--- a/tools/js-class-c-struct-transpiler/transpile.js
+++ b/tools/js-class-c-struct-transpiler/transpile.js
@@ -1,12 +1,6 @@
 import { parseArgs } from "util";
 
 let types = {
-  logical: {
-    c: "char",
-    js: "boolean",
-    sql: "INTEGER",
-    size: 1,
-  },
   u8: {
     c: "unsigned char",
     js: "Uint8",
@@ -93,23 +87,16 @@ const { values } = parseArgs({
 
 function jsStructConstructor(size, containsString, type, args) {
   return `
-    /** 
-     * Get the struct representation of the object
-     * @return {Uint8Array} u8 array of the C struct.
-     */
-    get bytes() {
-        return new Uint8Array(this._ptr);
-    }
     /**
      * Constructs a new ${type}
      * 
      * @param ${args} init The arguments to construct the object.
-     * @param {ArrayBuffer} ptr The pointer to the C struct.
+     * @param {Uint8Array} ptr The pointer to the C struct.
      */
     constructor(init = {}, ptr = undefined) {
         this._size = ${size};
-        this._ptr = ptr?.buffer || new ArrayBuffer(this._size);
-        this._data = new DataView(this._ptr);
+        this._ptr = ptr || new Uint8Array(this._size);
+        this._data = new DataView(this._ptr.buffer);
         ${
           containsString
             ? `
@@ -148,6 +135,31 @@ for (const type of Object.keys(schema)) {
     let typeSize = parseInt(types[propType]?.size);
 
     switch (kind) {
+      case "logical":
+        typeSize = 1;
+        jsData += `
+    /**
+     * ${comment}
+     * @return {boolean} gets the value of ${prop}
+     */
+    get ${prop}() {
+        return Boolean(this._data.getInt8(${parseInt(offset)}, true));
+    }
+    /**
+     * ${comment}
+     * @param {boolean} sets the value of ${prop}
+     */
+    set ${prop}(v) {
+        return this._data.setInt8(${parseInt(
+          offset
+        )}, v ? 1 : 0, true);
+    }`;
+        args += `${prop}: boolean, `;
+        typeDef += ` * @property {boolean} ${propType} ${comment}\n`;
+        sqlData += `, ${prop} INTEGER`;
+        cData += `
+    char ${prop}; // ${comment}`;
+        break;
       case "string":
         containsString = true;
         typeSize = props[prop].size;
@@ -167,7 +179,12 @@ for (const type of Object.keys(schema)) {
      * @param {string} v sets the value of ${prop}
      */    
     set ${prop}(v) {
-        this._data.set(this._encoder.encode(v), ${parseInt(offset)});
+        if (v.length > ${parseInt(typeSize)}) {
+          throw new Error("input is larger than buffer size of ${parseInt(typeSize)}");
+        }
+        const tmp = new Uint8Array(new ArrayBuffer(${parseInt(typeSize)}));
+        tmp.set(this._encoder.encode(v))
+        this._ptr.set(tmp.buffer, ${parseInt(offset)});
     }`;
         sqlData += `, ${prop} TEXT`;
         cData += `
@@ -195,7 +212,7 @@ for (const type of Object.keys(schema)) {
         )}, v, true);
     }`;
         args += `${prop}: ${types[propType].js}, `;
-        typeDef += ` * @property ${types[propType].js} ${propType} ${comment}\n`;
+        typeDef += ` * @property {${types[propType].js}} ${propType} ${comment}\n`;
         sqlData += `, ${prop} ${types[propType].sql}`;
         cData += `
     ${types[propType].c} ${prop}; // ${comment}`;
@@ -216,7 +233,7 @@ for (const type of Object.keys(schema)) {
      * @param {${types[propType].js}} sets the value of ${prop}
      */
     set ${prop}(v) {
-        this._data.set(v.bytes(), ${offset});
+        this._ptr.set(v._ptr, ${offset});
     }`;
         const importS = `import ${propType} from "./${propType}"\n`;
         if (!importStatements.includes(importS)) {
@@ -224,7 +241,7 @@ for (const type of Object.keys(schema)) {
         }
         const localKey = `${prop.toLowerCase()}_id`;
         args += `${prop}: ${types[propType].js}, `;
-        typeDef += ` * @property ${types[propType].js} ${propType} ${comment}\n`;
+        typeDef += ` * @property {${types[propType].js}} ${propType} ${comment}\n`;
         sqlData += `, ${localKey} INTEGER`;
         foreignKeys += `\n, FOREIGN KEY(${localKey}) REFERENCES ${propType}(id)`
         cData += `\n\t\t${types[propType].c} ${prop}; // ${comment}`;