---
title: "readAttributeThreadVersion(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterthreadborderroutermanagement/readattributethreadversion(completion:)"
---

# readAttributeThreadVersion(completion:)

## Declaration

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

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