---
title: "readAttributeWhitePointY(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclustercolorcontrol/readattributewhitepointy(completion:)"
---

# readAttributeWhitePointY(completion:)

## Declaration

```swift
func readAttributeWhitePointY(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)
```

```swift
func readAttributeWhitePointY() async throws -> NSNumber
```