[Home](./index.md) > [@firebase/database](./database.md) > [OnDisconnect](./database.ondisconnect.md) > [set](./database.ondisconnect.set.md) ## OnDisconnect.set() method Signature: ```typescript set(value: any, onComplete?: (a: Error | null) => any): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | value | any | | | onComplete | (a: Error \| null) => any | | Returns: Promise<void>