---
title: nullableOptionalStringWasNull
framework: matter
role: symbol
role_heading: Instance Property
path: matter/mtrtestclusterclustertestcomplexnullableoptionalresponseparams/nullableoptionalstringwasnull
---

# nullableOptionalStringWasNull

## Declaration

```swift
@NSCopying var nullableOptionalStringWasNull: NSNumber? { get set }
```