> 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/configuring-parameter-templates/parameter-template-pt-support-for-multi-record-parameters/bulk-update-parameters-across-device-instances.md).
# Bulk update parameters across device instances
Update a parameter across all application instances for selected devices in VHQ.
{% hint style="info" %}
**Use this when** you need to update one parameter's value across every instance on a set of devices, without visiting each instance individually.
{% endhint %}
A checkbox, **Update parameters across all instances**, on the *Edit Parameter for Application* screen lets you bulk-update an existing parameter across every instance on selected devices. It's unselected by default. This only supports editing values — you can't add, delete, or reorder instances with it. Updating a value in one place updates it throughout all instances for all selected devices.
This works in both the *Device Search* and *Device Profile* screens. On save, VHQ shows *Parameters successfully updated*. Returning to this screen later, the previously entered values are no longer shown.
{% hint style="info" %}
**Example**: Hundreds or thousands of card ranges may be configured across multiple devices. Among many CardRange instances, a parameter like *PAN High* or *PAN Low* may be common. Instead of visiting every instance individually, you can update it once and have the value applied throughout all instances on all selected devices.
{% endhint %}
## Update a parameter across instances
{% stepper %}
{% step %}
### Select the devices
On *Device Search*, select the devices and click **Edit Parameters**.
{% endstep %}
{% step %}
### Click Edit
On the *Edit Parameters for Application* screen, click **Edit**.
{% endstep %}
{% step %}
### Select the bulk-update checkbox
**Update parameters across all instances** appears, unselected by default.
{% endstep %}
{% step %}
### Update and save
Select the checkbox, update the parameter, and click **Save**. The value updates across all instances for all selected devices.
{% endstep %}
{% endstepper %}
Keywords
Also called: bulk parameter update, update across instances.
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