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

# update(_:)

Update an existing instance. The old instance is returned.

## Declaration

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

## See Also

### Using the collection

- [insert(_:)](realitykit/meshinstancecollection/insert(_:).md)
- [remove(id:)](realitykit/meshinstancecollection/remove(id:).md)
- [removeAll()](realitykit/meshinstancecollection/removeall().md)
- [subscript(_:)](realitykit/meshinstancecollection/subscript(_:).md)