# sendCollisionMessages

> Send collision callback messages.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public bool sendCollisionMessages { get; set; }
```

### Remarks

Additional Resources: [ParticleSystem.collision](/engine/6000.3/script-reference/unityengine/particlesystem/collision.md), [MonoBehaviour.OnParticleCollision(GameObject)](/engine/6000.3/script-reference/unityengine/monobehaviour/onparticlecollision.md).