[Home](./index.md) > [server](./server.md) > [PlayerUI](./server.playerui.md) > [append](./server.playerui.append.md) ## PlayerUI.append() method Appends UI HTML to the player's existing client UI. Use for: incremental overlays (notifications, tooltips, modal layers). Do NOT use for: replacing the entire UI; use `PlayerUI.load`. **Signature:** ```typescript append(htmlUri: string): void; ``` ## Parameters

Parameter	Type	Description
htmlUri	string	The UI HTML URI to append. \*\*Requires:\*\* Player must be in a world. \*\*Side effects:\*\* Emits `PlayerUIEvent.APPEND`. \*\*Category:\*\* Players

**Returns:** void ## Remarks Multiple calls in the same tick append in call order. If used with `PlayerUI.load` in the same tick, appends occur after the load.