# ParticleSystemCustomData

> Which stream of custom particle data to set.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public enum ParticleSystemCustomData
```

## Remarks

Additional Resources: [ParticleSystem.SetCustomParticleData](/engine/6000.6/script-reference/unityengine/particlesystem/setcustomparticledata.md), [ParticleSystem.GetCustomParticleData](/engine/6000.6/script-reference/unityengine/particlesystem/getcustomparticledata.md).

## Fields

| Value                                                                                      | Description                                    |
| ------------------------------------------------------------------------------------------ | ---------------------------------------------- |
| [Custom1](/engine/6000.6/script-reference/unityengine/particlesystemcustomdata/custom1.md) | The first stream of custom per-particle data.  |
| [Custom2](/engine/6000.6/script-reference/unityengine/particlesystemcustomdata/custom2.md) | The second stream of custom per-particle data. |