[UA] Extract dynamic parameters from URLs via filters [Legacy]

If you do not want to, or are unable to, modify your tracking code or page code to define Custom Variables, you have the option to instead use a View filter to extract dynamic-parameter values for Product ID and then share those values as Dynamic Attributes.

Create a View filter

1. In Analytics, click Admin.
2. Select the relevant Account, Property, and View.
3. In the View column, click Filters.
4. Click + NEW FILTER.
5. Select Custom filter, and then select Advanced.
6. In Field A --> Extract A, select Request URI.
7. In the text field for Field A..., enter a regular expression to identify your product IDs; for example:
   
   -(\d[^-]*)\.html
   
   or
   
   prod_id=([^&\.]*)
8. In Output to --> Constructor, select User Defined.
9. In the text field for Output to..., enter $A1.

Your completed filter should look something like the following:

The dynamic-parameter values that you extract from your URLs become visible in the User Defined report.

Share the dynamic-parameter values as Dynamic Attributes

When you share dynamic attributes with your AdWords accounts, under Required Attributes > Product ID, rather than select a Custom Variable, you can instead select User Defined to share the extracted values with AdWords, and use them as the basis for your Dynamic Remarketing.