> ## Documentation Index
> Fetch the complete documentation index at: https://dialnexa.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Dynamic Variables And Fallback Settings Video Tutorial

> Watch the dynamic variables and fallback settings video tutorial to personalize DialNexa calls and define safe behavior when primary providers fail.

The **dynamic variables and fallback settings video tutorial** shows how to pass call-specific context into an agent and configure backup behavior for supported providers.

## Before You Begin

List the variables required by the prompt, prepare test values and safe defaults, and confirm which fallback options are available for the selected provider configuration.

## Watch The Dynamic Variables And Fallback Settings Video Tutorial

<div className="aspect-video w-full overflow-hidden rounded-xl">
  <iframe className="block h-full w-full" style={{ transform: "scale(1.035)", border: 0 }} src="https://www.youtube.com/embed/qwOlC-TSrYc?list=PLD0EumG1sQzw&index=11" title="DialNexa Voice AI: Dynamic Variables and Fallback Settings" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />
</div>

This video runs for 6 minutes and 21 seconds.

## Verify Variables And Fallbacks

Test calls with complete, missing, and unexpected variable values. Confirm that fallback configuration does not change the required language or conversation behavior.

## Related Pages

* [Dynamic variables](/docs/agents/dynamic-variables)
* [Fallback settings](/docs/agent-settings/fallback-settings)
* [Default variables](/docs/data/default-variables)