> For the complete documentation index, see [llms.txt](https://rocket-networking.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rocket-networking.gitbook.io/docs/rocket-networking-code/rooms/callback_changeroom.md).

# callback\_ChangeRoom()

After a successful room change, the callback function **callback\_ChangeRoom()** is called. 

Under Scripts/Rocket Networking/Callback Functions , you can edit this to do whatever you want…

### Example Implementation of callback

<figure><img src="https://1224219250-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvYO9I4EKmgDF783aI7J4%2Fuploads%2FjI9aLU4739kOs47OGnWQ%2Fimage.png?alt=media&amp;token=5850e3a3-e074-4e5c-9806-5873587de37e" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1224219250-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvYO9I4EKmgDF783aI7J4%2Fuploads%2FMbG8Q3wBRXRD27xQQMtk%2Fimage.png?alt=media&amp;token=7227e097-f3d5-48f1-b431-aed46de3b854" alt=""><figcaption></figcaption></figure>

* Here I’ve just done a show\_message so the user is shown a dialog box with that message&#x20;
* You can use this as confirmation that you have indeed changed rooms