Working with some unstructured data and hoping to extract utm\_campaign names from URLs. Here's an example of one URL. I'd like to extract the name following "utm\_campaign=" but before "&utm\_source" each time. How can I do this with regex?

```none
https://data.io/?utm_campaign=branded&utm_source=google&utm_medium=cpc&utm_term=data&gclid=CjwKCAjwiuuRBhBvEiwAFXKaNGwDI2MaPLQpb9duvQZ2XeOA4vpk7FuBTqhYiJ2ysnirdUh8SZ6-zxoC4VYQAvD_BwE

```

I've tried various regex functions, for instance:

```none
regexp_substr(get_path(event_properties, 'url'), '(\[A-Za-z\_-\]\*)-utm_campaign')

```