---
title: "readAttributeInt64u(with:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrclusterunittesting/readattributeint64u(with:)"
---

# readAttributeInt64u(with:)

## Declaration

```swift
func readAttributeInt64u(with params: MTRReadParams?) -> [String : Any]?
```