Updating records - stateless forms

Updating records - stateless forms

I have 3 stateless forms based on one large application form

Application_Page_1
Application_Page_2
Application_Page_3

When I am at the end of page 1, I create a new record in the application table upon clicking the continue button.
What I would like to do for page 2 and page 3 is update the current record that was just created in page 1 instead of saving a new record upon continue. How do I do that? Do I need to create a function that stores the recordID upon saving of the record in page 1 in some global variable or is there an easy way to access the ID from the other 2 forms without having to do that?