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# particleScaleSequence

The sequence used to specify the scale factor of a particle over its lifetime.

```
var particleScaleSequence: SKKeyframeSequence? { get set }
```

## Discussion

The default value is `nil`. If a non-`nil` value is specified, then the [`particleScale`](/documentation/SpriteKit/SKEmitterNode/particleScale), [`particleScaleRange`](/documentation/SpriteKit/SKEmitterNode/particleScaleRange), and [`particleScaleSpeed`](/documentation/SpriteKit/SKEmitterNode/particleScaleSpeed) properties are ignored. Instead, the sequence is used to specify the scale factor.

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