# userDefineRecordId property Null safety

String userDefineRecordId
read / write

Field description: on-cloud recording switch, which is used to specify whether to record the user's audio/video stream into a file in the specified format in the cloud.

Recommended value: it can contain up to 64 bytes of letters (a–z and A–Z), digits (0–9), underscores, and hyphens.

For more information, please see On-Cloud Recording and Playback.

## Implementation

    String
        userDefineRecordId;