# Entity.ParameterSet Represents a reference to the parameters for a particular entity. ``` struct ParameterSet ``` ## Overview Note this struct is a reference and does not have copy-on-write semantics. ## Topics ### Subscripts [`subscript(String, T.Type) -> BindableValue?`](/documentation/RealityKit/Entity/ParameterSet/subscript(_:_:)) Accessor for the parameters, returns a bindable value. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)