# Apply tracker settings by regex

{% hint style="success" %}
**Access Type**: Compliance Report - Editor
{% endhint %}

Didomi persists a tracker's configured settings across subsequent compliance reports by matching the following fields for the tracker in your tracker policy:

* Name
* Party
* Initiator
* Type

If all of the fields above are consistent across a compliance report and tracker policy then the settings for the tracker will persist. 

There are specific use-cases where you may want to persist a single set of exemptions and purposes across a group of trackers that follow a particular pattern. Utilizing [regular expression (regex)](/get-started/general/regular-expression-regex.md), your organization can provide the pattern for a single tracker and Didomi will apply the tracker's settings to any tracker found in a compliance report that matches the configured pattern.

> Example:
>
> Your organization has three cookies being dropped by the same vendor on a domain that should have the same settings. The trackers that are dropped are:
>
> * `_ga`
> * `_ga#`
> * `_ga_12345`<br>

Using the example above, your organization can attribute and persist the same set of exemptions and purposes across all three cookies with a regex of `^_ga` .&#x20;

To define this pattern, click **Compliance Report** on the right-hand panel and select the ellipsis inline with a domain on the subsequent page.&#x20;

Click **Manage tracker policy** from the drop-down menu.

<figure><img src="/files/HRMGXNCv4D1Gs8DMw2db" alt="" width="563"><figcaption></figcaption></figure>

Select a tracker on the list that will be used to set the pattern for the other trackers that fit the pattern and click **Edit**.&#x20;

<figure><img src="/files/OSJeno8pYlg0pQ24GOUb" alt="" width="563"><figcaption></figcaption></figure>

In the subsequent modal, enable the **Tracker name is a RegEx** setting and use the **Tracker name** field to input the regex that should be used to match other trackers that fit the pattern.&#x20;

Click **Save** when finished.&#x20;

<figure><img src="/files/7dgvquXOhWEtdvx9oW4q" alt="" width="375"><figcaption></figcaption></figure>

All trackers that match your configured regex pattern will inherit the source tracker's exemptions and purposes.


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