# Sandbox.UI.PanelRenderTreeBuilder.AddMarkupContent

```csharp
void AddMarkupContent(int sequence, string markupContent)
```

Add markup to the current element

### Parameters

- `sequence` (`int`)
- `markupContent` (`string`)

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