# Sandbox.UI.DockHost.RestoreState

```csharp
bool RestoreState(string json)
```

Restores a valid layout atomically. Open nonclosable panels must remain present.

### Parameters

- `json` (`string`)

### Returns

`bool`

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