Sometimes, you may need to pass custom variables in the funnel.

Do achieve that, you may pass any variables as query parameters on your funnel URL:

https://my.frog.tech/60a77c31b4477?utm_source=part&utm_medium=mail&utm_campain=prod

Query data will be stored in the visit, and each parameters will be considered as a new contextual variable. In the exemple above, $utm_source, $utm_medium and $utm_campain will be available as contextual variables.