Sorry that I wasn’t more clear. What I meant to ask was, can there be a shortcode variable such that a different (other than the one specified in Settings) confirmation page could be declared? A particular sub level might warrant a different confirmation page.
There is the field for subscriber id, which (I believe) is for the Stripe customer id that starts with cus_ . So that is there. Is that what you meant? Is there a separate field for plan id, other than the drop-down for subscription level?