1# JS API Changes of the Communication Subsystem 2 3The table below lists the APIs changes of the communication subsystem in OpenHarmony 3.2 Beta1 over OpenHarmony 3.1 Release. 4 5## API Changes 6 7| Module| Class| Method/Attribute/Enumeration/Constant| Change Type| 8|---|---|---|---| 9| ohos.bluetooth | ProfileId | PROFILE_HID_HOST = 6 | Added| 10| ohos.bluetooth | HidHostProfile | off(type: "connectionStateChange", callback?: Callback\<StateChangeParam>): void; | Added| 11| ohos.bluetooth | HidHostProfile | on(type: "connectionStateChange", callback: Callback\<StateChangeParam>): void; | Added| 12| ohos.bluetooth | HidHostProfile | disconnect(device: string): boolean; | Added| 13| ohos.bluetooth | HidHostProfile | connect(device: string): boolean; | Added| 14