---
title: "writeAttributeNullableFloatDouble(withValue:params:completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclustertestcluster/writeattributenullablefloatdouble(withvalue:params:completionhandler:)"
---

# writeAttributeNullableFloatDouble(withValue:params:completionHandler:)

## Declaration

```swift
func writeAttributeNullableFloatDouble(withValue value: NSNumber?, params: MTRWriteParams?, completionHandler: @escaping @Sendable ((any Error)?) -> Void)
```

```swift
func writeAttributeNullableFloatDouble(withValue value: NSNumber?, params: MTRWriteParams?) async throws
```