# Sandbox.BaseChair.OnDamage

```csharp
void OnDamage(in DamageInfo& modreq(System.Runtime.InteropServices.InAttribute) damage)
```

### Parameters

- `in damage` (`DamageInfo& modreq(System.Runtime.InteropServices.InAttribute)`)

Declared in [Sandbox.BaseChair](/api/Sandbox.BaseChair).
Assembly: `Sandbox.Engine`.