# How can we help?

## Overview

Dynamic lightbox items are string values that are passed to a lightbox via a url or by accessing existing content on a webpage with JavaScript.

## Add dynamic items

1. Dynamic items can be added via the Web Form's administrative interface.

- Read more about [dynamic items](https://support.cordial.com/hc/en-us/articles/360028078352-Dynamic-Lightbox-Content-with-URL-Parameters).

2. When setting up a dynamic item, you can add a fallback value:

The fallback value will be displayed whenever the conditions for the target fill value are not satisfied.

3. When setting a dynamic item to target a text block, the text in the editor will act as a fallback if no fallback is set in the dynamic item.

If you have multiple dynamic items set up using the same target, you only need to set a fallback value for the last dynamic item in the list targeting that value.