Thank you for the idea. I am curious and not clear about how does Marketo will capture a hidden field value. Let's say, existing Lead A has "email consent last update" date/time value "05/23/2018 4:18 PM". I added this "email consent last update" field as a hidden field on the form, choose "Get value from default" value. However, I leave "Default value" empty. I assume Marketo will capture the value as a empty string, or no or null? How can Marketo grab the real date/time value from lead record?
Another issue I encountered is
- when I filling out form on google chrome browser, by using an existing lead email or a new test email, the hidden field always not show up.
- when I filling out form on incognito, by using an existing lead email or a new test email, the hidden field always show up...
Could you advice that why this happened?