---
title: "update(_:)"
framework: realitykit
role: symbol
role_heading: Instance Method
path: "realitykit/meshskeletoncollection/update(_:)"
---

# update(_:)

Update an existing skeleton. The old instance is returned.

## Declaration

```swift
@discardableResult mutating func update(_ instance: MeshResource.Skeleton) -> MeshResource.Skeleton?
```