---
title: "readAttributeBeaconLostCount(with:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrclusterwifinetworkdiagnostics/readattributebeaconlostcount(with:)"
---

# readAttributeBeaconLostCount(with:)

## Declaration

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