# September 2024

> In VB expression apps, controls did not show the appropriate error message, when an expression caused an invalid cast.

## September 23, 2024

### Bug fix

In VB expression apps, controls did not show the appropriate error message, when an expression caused an invalid cast.

## September 2, 2024

### Bug fixes

In legacy apps which use entities, an error would appear when you interacted with a radio button control.

### Improvements

* You can now manage the display of Tab controls using VB expressions. Disable or hide **Tab** controls, or set conditions under which they display, by using the following VB expression control properties: **Tab Name**, **Disabled** and **Hidden**.
* We have added a new **File Uploader** app template to the starting app creation flow. The template can be used with the **File Uploader** control. For a complete list of app layout templates, refer to [Sample App Layouts](https://docs.uipath.com/apps/automation-cloud/latest/user-guide/sample-app-layouts).