How do you pre-populate a Jira portal Dynamic form using the URL like standard forms.

Hi All,

I have recently created a few dynamic forms that changes based on the answer of the initial field. I was wondering if there was a way to pre-fill this initial dynamic field using the URL like on standard forms. For example, adding ?summary=test or ?customfield_12345=test on the end of the URL etc. 

Thanks for any help you can provide.