> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/support-us/verifone-hq/vhq-parameter-management.md).

# VHQ Parameter Management

This section discusses configuring and managing Parameters in VHQ. As well as a demonstrational video on this feature.

<details>

<summary>Keywords</summary>

Also called: parameter management, application parameters. Search terms: parameter definition file, form view file, parameter templates, internationalization.

</details>

## What is Parameter Management?

The **Parameter Management** feature makes it easier to configure, edit, download, and manage the values of application parameters. You can define, configure values for, and download the application (including OS) parameters to devices. The applications on a device comprise a set of executable and configuration files that store the application parameters.

*Parameter Management* includes:

* **Setup/definition phase** — sets up prerequisite configurations:
  * Configuration of software packages and applications.
  * Importing parameter definitions for the applications.
  * Importing parameter form view files for the applications.
  * Configuring parameter templates for the applications.
* **Configuration phase** — identifies the parameters (and their values) to manage for specific devices:
  * Assigning software packages to devices.
  * Assigning application parameter templates to devices.
  * Configuring parameter values for specific applications on specific devices.
* **Downloads/Synchronize phase** — VHQ evaluates and builds the list of parameters in the appropriate format and downloads them to the device.

{% hint style="info" %}
VHQ supports parameter downloads only using automated downloads.
{% endhint %}

VHQ performs a full parameter download:

* When a package is assigned to a device for the first time.
* When an existing Package 1.0 is replaced by Package 2.0 (whenever package assignment changes, full parameters are downloaded).

## Internationalization

VHQ supports internationalizing parameter values for end users who cannot understand the language, currency, or data formats currently used in VHQ, giving local users an advantage when editing or updating parameter values.

The VPDX and VPFX files support UTF-8 for parameter values, as do all validation-related attributes in the VPFX file. The UTF-8 language setting is defined in the VPDX and VPFX files, though one application version can support only one language at a time.

{% hint style="info" %}
If values are defined in VPDX and VPFX in Hebrew for a particular application version, users can view and edit values in Hebrew only.
{% endhint %}

You can edit or update parameter values in locales by:

* Importing parameter definitions with UTF-8 values into VHQ.
* Configuring UTF-8 values with REST APIs.
* Editing parameters in the VHQ UI, in the language defined in VPDX.

{% hint style="info" %}
Edited UTF-8 parameter values must be downloaded to devices as-is.
{% endhint %}

## VHQ Parameter Update Demo

{% hint style="info" %}
View the video below for a demonstration of how to update parameters on a single device within VHQ. See the VHQ Demo Videos section for more videos.
{% endhint %}

{% embed url="<https://vimeo.com/1166006036?fe=cm&fl=pl>" %}

## Related topics

* [Configuring parameter definitions for applications](/support-us/verifone-hq/vhq-parameter-management/configuring-parameter-definitions-for-applications.md)
* [Configuring parameter form view file](/support-us/verifone-hq/vhq-parameter-management/configuring-parameter-form-view-file.md)
* [Configuring parameter templates](/support-us/verifone-hq/vhq-parameter-management/configuring-parameter-templates.md)
* [Configuring parameter template (PT) at hierarchy](/support-us/verifone-hq/vhq-parameter-management/configuring-parameter-template-pt-at-hierarchy.md)
* [Retaining parameter values on changing software assignment](/support-us/verifone-hq/vhq-parameter-management/retaining-parameter-values-on-changing-software-assignment.md)
* [Downloading parameters and software separately](/support-us/verifone-hq/vhq-parameter-management/downloading-parameters-and-software-separately.md)


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