---
title: "subscript(_:_:)"
framework: realitykit
role: symbol
role_heading: Instance Subscript
path: "realitykit/entity/parameterset/subscript(_:_:)"
---

# subscript(_:_:)

Accessor for the parameters, returns a bindable value.

## Declaration

```swift
@MainActor @preconcurrency subscript<T>(name: String, type: T.Type = T.self) -> BindableValue<T>? where T : BindableData { get set }
```