diff --git a/AUTO_RECONSCTRUCT_BY_JSON_SCHEME.md b/AUTO_RECONSCTRUCT_BY_JSON_SCHEME.md
index 7cefc14aa..b5a9d97c2 100644
--- a/AUTO_RECONSCTRUCT_BY_JSON_SCHEME.md
+++ b/AUTO_RECONSCTRUCT_BY_JSON_SCHEME.md
@@ -53,13 +53,12 @@ add_a_car(car: Car) {
 ### The schema format
 #### We support multiple type in schema:
 * build-in non object types: `string`, `number`, `boolean`
-* build-in object types: `date`, `bigint`
+* build-in object types: `Date`, `BigInt`. And we can skip those two build-in object types in schema info
 * build-in collection types: `array`, `map`
   * for `array` type, we need to declare it in the format of `{array: {value: valueType}}`
   * for `map` type, we need to declare it in the format of `{map: {key: 'KeyType', value: 'valueType'}}`
 * Custom Class types: `Car` or any class types
-* Near collection types: `Vector`, `LookupMap`, `LookupSet`, `UnorderedMap`, `UnorderedSet`
-  * 
+* Near collection types: `Vector`, `LookupMap`, `LookupSet`, `UnorderedMap`, `UnorderedSet`  
 We have a test example which contains all those types in one schema: [status-deserialize-class.js](./examples/src/status-deserialize-class.js)
 ```js
 class StatusDeserializeClass {
@@ -102,6 +101,27 @@ class StatusDeserializeClass {
     // other methods
 }
 ```
+#### Logic of auto reconstruct by json schema
+The `_reconstruct` method in [near-bindgen.ts](./packages/near-sdk-js/src/near-bindgen.ts) will check whether there exit a schema in smart contract class, if there exist a static schema info, it will be decoded to class by invoking `decodeObj2class`, or it will fallback to previous behavior:
+```typescript
+  static _reconstruct(classObject: object, plainObject: AnyObject): object {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    if (classObject.constructor.schema === undefined) {
+      for (const item in classObject) {
+        const reconstructor = classObject[item].constructor?.reconstruct;
+  
+        classObject[item] = reconstructor
+                ? reconstructor(plainObject[item])
+                : plainObject[item];
+      }
+  
+      return classObject;
+    }
+  
+    return decodeObj2class(classObject, plainObject);
+  }
+```
 #### no need to announce GetOptions.reconstructor in decoding nested collections
 In this other hand, after we set schema for the Near collections with nested collections, we don't need to announce `reconstructor` when we need to get and decode a nested collections because the data type info in the schema will tell sdk what the nested data type.  
 Before we set schema if we need to get a nested collection we need to set `reconstructor` in `GetOptions`:
diff --git a/examples/__tests__/test-status-deserialize-class.ava.js b/examples/__tests__/test-status-deserialize-class.ava.js
index a7b291ed3..51634d9bb 100644
--- a/examples/__tests__/test-status-deserialize-class.ava.js
+++ b/examples/__tests__/test-status-deserialize-class.ava.js
@@ -41,7 +41,7 @@ test("Ali sets then gets status", async (t) => {
   );
 });
 
-test.only("Ali set_truck_info and get_truck_info", async (t) => {
+test("Ali set_truck_info and get_truck_info", async (t) => {
   const { ali, statusMessage } = t.context.accounts;
   let carName = "Mercedes-Benz";
   let speed = 240;
@@ -132,6 +132,17 @@ test("Ali set_big_num_and_date then gets", async (t) => {
   t.is(afterSetDate.toString(), '2023-08-19T23:15:30.000Z');
 });
 
+test("Ali set_extra_data without schema defined then gets", async (t) => {
+  const { ali, statusMessage } = t.context.accounts;
+  await ali.call(statusMessage, "set_extra_data", { message: "Hello world!", number: 100 });
+
+
+  const messageWithoutSchemaDefined = await statusMessage.view("get_extra_msg", { });
+  t.is(messageWithoutSchemaDefined, "Hello world!");
+  const numberWithoutSchemaDefined =  await statusMessage.view("get_extra_number", { });
+  t.is(numberWithoutSchemaDefined, 100);
+});
+
 test("View get_subtype_of_efficient_recordes", async (t) => {
   const { statusMessage } = t.context.accounts;
 
diff --git a/examples/src/status-deserialize-class.js b/examples/src/status-deserialize-class.js
index d6e248aa2..7ee6978a0 100644
--- a/examples/src/status-deserialize-class.js
+++ b/examples/src/status-deserialize-class.js
@@ -77,6 +77,8 @@ export class StatusDeserializeClass {
         this.user_car_map = new UnorderedMap("g");
         this.big_num = 1n;
         this.date = new Date();
+        this.message_without_schema_defined = "";
+        this.number_without_schema_defined = 0;
     }
 
     @call({})
@@ -256,6 +258,26 @@ export class StatusDeserializeClass {
         return this.unordered_set.contains(account_id);
     }
 
+    @call({})
+    set_extra_data({ message, number }) {
+        let account_id = near.signerAccountId();
+        near.log(`${account_id} set_extra_data message ${message}, number: ${number}`);
+        this.message_without_schema_defined = message;
+        this.number_without_schema_defined = number;
+    }
+
+    @view({})
+    get_extra_msg({ }) {
+        near.log(`get_extra_msg`);
+        return this.message_without_schema_defined;
+    }
+
+    @view({})
+    get_extra_number({ }) {
+        near.log(`get_extra_number`);
+        return this.number_without_schema_defined;
+    }
+
     @view({})
     get_subtype_of_efficient_recordes({  }) {
         near.log(`get_subtype_of_efficient_recordes`);