---
title: value
framework: phase
role: symbol
role_heading: Instance Property
path: phase/phasemetaparameter/value
---

# value

A value for the metaparameter.

## Declaration

```swift
var value: Any { get set }
```

## Discussion

Discussion The framework sets this property to the subclass’s initializer argument; for example, see init(value:). An app changes the value at runtime by calling fade(value:duration:) on the subclass.