Capturing UTM Values for Known User
I am trying to capture the UTM parameter on form fills regardless if the marketo engagement is a known visitor or not, without using Smart Campaigns to write to the UTM fields.
We embed our Marketo forms to WordPress and Webflow landing pages.
Our forms have hidden fields set up and work for new users, but are cleared for known visitors. We use Known Visitor HTML on these forms and we recently added a recommended JavaScript workaround (https://nation.marketo.com/t5/product-discussions/how-to-add-utm-parameters-to-quot-known-visitor-qu... aka https://codepen.io/figureone/pen/jOWVZMg (CodePen Home MktoForms2 :: Auto-Fill w/Cascade v1.1.2) to our pages. This recommended JavaScript workaround is a partial success, as the values are stored, but the hidden field values are not being written without using a Smart Campaign.
Is there an extra step needed so the UTM Fields are written to for known visitors without a Smart Campaign?