# IsAffectedBy(ParticleSystemForceField)

> Determines whether any particles are inside the influence of a Force Field.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public bool IsAffectedBy(ParticleSystemForceField field)
```

### Parameters

**** (\[ParticleSystemForceField]\(/engine/6000.5/script-reference/unityengine/particlesystemforcefield)): The Force Field to test.

### Returns

| Type                                                          | Description                                          |
| ------------------------------------------------------------- | ---------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | Whether the Force Field affects the Particle System. |