<!--
{
  "availability" : [
    "iOS: 16.4.0 -",
    "iPadOS: 16.4.0 -",
    "macCatalyst: 16.4.0 -",
    "macOS: 13.3.0 -",
    "tvOS: 16.4.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 9.4.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Matter",
  "identifier" : "/documentation/Matter/MTRClusterUnitTesting/writeAttributeNullableInt40u(withValue:expectedValueInterval:params:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Matter"
    ],
    "preciseIdentifier" : "c:objc(cs)MTRClusterUnitTesting(im)writeAttributeNullableInt40uWithValue:expectedValueInterval:params:"
  },
  "title" : "writeAttributeNullableInt40u(withValue:expectedValueInterval:params:)"
}
-->

# writeAttributeNullableInt40u(withValue:expectedValueInterval:params:)

```
func writeAttributeNullableInt40u(withValue dataValueDictionary: [String : Any], expectedValueInterval expectedValueIntervalMs: NSNumber, params: MTRWriteParams?)
```

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)