---
title: "set(qualifiedComponentName:representation:)"
framework: realitykit
role: symbol
role_heading: Instance Method
path: "realitykit/entity/componentset/set(qualifiedcomponentname:representation:)"
---

# set(qualifiedComponentName:representation:)

Adds component data to an entity which will be written to a Reality file, but have no other effect.

## Declaration

```swift
@MainActor @preconcurrency func set(qualifiedComponentName: String, representation: some Encodable) throws
```

## Discussion

Discussion This function allows you to set component properties which have no available definition, such as properties that are only available on some platforms, or properties which don’t have an accessible runtime Swift type. The following built-in components support setting properties using this function: AnchoringComponent DockingRegionComponent EnvironmentBlendingComponent ManipulationComponent SceneUnderstandingComponent