Pass a variable in a Modal to an Iframe
The Iframe is in JotForm and their directions to pass a variable are: https://www.jotform.com/help/83-adding-parameters-in-lightbox-and-feedback-forms
The site where this is implemented is: https://full-dorothy.cs50.force.com/Member/
On the site, if you click on "Add a New Member" in upper left corner you will see the modal and the "Password_Input__c" variable 123456 is in modal.
How do I get the variable into the Iframe?