---
title: "BlendWeight.parameter(_:defaultWeight:)"
framework: realitykit
role: symbol
role_heading: Case
path: "realitykit/blendweight/parameter(_:defaultweight:)"
---

# BlendWeight.parameter(_:defaultWeight:)

The amount of impact an animation has on a named parameter of an entity.

## Declaration

```swift
case parameter(String, defaultWeight: Float = 1.0)
```

## See Also

### Choosing the blend weight

- [BlendWeight.bindTarget(_:defaultWeight:)](realitykit/blendweight/bindtarget(_:defaultweight:).md)
- [BlendWeight.value(_:)](realitykit/blendweight/value(_:).md)