# Parameters tracking

Campaign parameters of the URL where the pickzen is installed can be added to the recommended product URLs. Similarly, the pickzen can also add custom parameters to the recommended product URLs.

Both features can be configured in General Settings / Tracking:

![](/files/-MGEBYPIHwl9R2jPdouz)

### Campaign parameters

If you need to add existing parameters to the product URL, configure the needed parameters in the **Campaign tracking** field. For example:

![](/files/-MGEC_mJcWDjNcvh3JFF)

In this case, if the page where the pickzen is installed had those two parameters, the parameters and their values will be added to the recommended product URLs. 

### Adding parameters

If you need to add custom parameters to the recommended product URLs, you can add them to the **Parameters to add** field. For example:

![](/files/-MGEDIhXWwnlCJX6sPHd)

In this case, those two parameters will be added to the recommended product URLs. 

{% hint style="warning" %}
In the case of [showing the results in Shopify](https://help.pickzen.com/integrations/shopify#showing-results-in-shopify) instead of displaying the products on the default recommended products page provided by Pickzen, those parameters will be added to the URL of the page where Pickzen will redirect, not the product URLs. You will need to add a custom Shopify liquid code to take the parameters from the URL and add them to each product.
{% endhint %}


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