---
title: "writeAttributeExtension(withValue:completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusteraccesscontrol/writeattributeextension(withvalue:completion:)"
---

# writeAttributeExtension(withValue:completion:)

## Declaration

```swift
func writeAttributeExtension(withValue value: [Any], completion: @escaping @Sendable ((any Error)?) -> Void)
```

```swift
func writeAttributeExtension(withValue value: [Any]) async throws
```