---
title: "append(contentsOf:preservingWorldTransforms:)"
framework: realitykit
role: symbol
role_heading: Instance Method
path: "realitykit/entity/childcollection/append(contentsof:preservingworldtransforms:)"
---

# append(contentsOf:preservingWorldTransforms:)

Adds the specified list of entity as children to this entity.

## Declaration

```swift
@MainActor @preconcurrency func append(contentsOf array: [Entity], preservingWorldTransforms: Bool = false)
```

## Parameters

- `array`: The child entities to add to the collection.
- `preservingWorldTransforms`: true to preserve the world transform. false to preserve the relative transform. (Use true if the entities should keep its effective location and size in the scene!)