# Sandbox.Animation.GraphBuilder.SelectorBuilder.Add

```csharp
SelectorBuilder Add(Node option, Node condition)
```

Play `option` when `condition` is true.
Options are checked in the order added; the first added is the fallback.

### Parameters

- `option` (`Node`)
- `condition` (`Node`)

### Returns

`SelectorBuilder`

Declared in [Sandbox.Animation.GraphBuilder.SelectorBuilder](/api/Sandbox.Animation.GraphBuilder.SelectorBuilder).
Assembly: `Sandbox.Engine`.