# Editor.Asset.SetInMemoryReplacement

```csharp
bool SetInMemoryReplacement(string sourceData)
```

Set data for this asset which will be compiled in memory. This is used to preview
asset changes (like materials) before committing to disk.

### Parameters

- `sourceData` (`string`)

### Returns

`bool`

Declared in [Editor.Asset](/api/Editor.Asset).
Assembly: `Sandbox.Tools`.