# Sandbox.ScriptSystem.Run

```csharp
T Run(string source)
```

Runs a script using cached code and returns its value.
Throws if execution fails, no value is returned, or the return type is incompatible with `T`.

### Parameters

- `source` (`string`)

### Returns

`T`

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