# Pass UTMs into Chili Piper Router Links

## UTM attribution overview

Booking pages are a common leak in attribution. Chili Piper UTM Tracking Integration needs UTMs on the booking URL when the appointment is confirmed. UTM Grabber already captured them on your WordPress site. Here is how to carry them over.

B2B teams use Chili Piper for routing. Append UTMs to router URLs from WordPress.

### Steps

1. utm-out on demo request buttons
2. Pass utm\_source into CP hidden fields if supported

Add `utm-out` to any button or link that opens your Chili Piper UTM Tracking Integration scheduler. [utm-out class guide](https://docs.utmgrabber.com/books/102-getting-started-for-handl-utm-grabber-v3/page/appending-utms-to-the-buttons-using-class-name-attributes-selectively).

For a thank-you page webhook flow, read [Send Chili Piper UTMs via Webhook](https://docs.utmgrabber.com/books/chili-piper-integration/page/end-hili-iper-s-via-ebhook).