# How can I set user properties and classroom properties? (/en/api-reference/faq/integration/agora_class_custom_properties)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

Flexible Classroom supports custom user properties and classroom properties. The property consists of a property name and a property value. Each property name has only one property value.

You can modify the value of a custom user or classroom property through full modification or path modification:

Suppose the current custom user or classroom property is as follows:

```json
{ "key1": { "subkey1": "a", "subkey2": "b" }, "key2": { "subkey3": "c", "subkey4": "d" } }
```

There are several scenarios:

* If you want to capitalize all values of `subkey`, you can pass the following JSON array when calling the API through full modification:

  ```json
  { "key1": { "subkey1": "A", "subkey2": "B" }, "key2": { "subkey3": "C", "subkey4": "D" } }
  ```

* If you only want to capitalize the value in `subkey1`, changing `a` into `A`, for example, you can pass `{"key1.subkey1":"A"}` when calling the API through path modification.

* If you want to add `subkey5` with the value of `E` to `key1`, you can pass `{"key1.subkey5":"E"}` when calling the API. The properties after modification are:

  ```json
  {
    "key1": { "subkey1": "A", "subkey2": "B", "subkey5": "E" },
    "key2": { "subkey3": "C", "subkey4": "D" }
  }
  ```

  Please note that if you pass `{"key1": {"subkey5": "E"} }`, all the original properties are overwritten.

* You can add multiple properties once. For example, pass `{"key1.subkey5":"E", "key2.subkey6":"F"}`. The properties after modification are:

  ```json
  {
    "key1": { "subkey1": "A", "subkey2": "B", "subkey5": "E" },
    "key2": { "subkey3": "C", "subkey4": "D", "subkey6": "F" }
  }
  ```