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Passing parameters into a page

I’d like to be able to pass vars to a page so I can use them to change labels or pass back out to a server as part of a transactional flow. For example:
Collect name and email address.
Pass name and email to server.
Server stores and generates transaction id.
Server sends confirmation email with custom url link to webflow form with embedded transaction id.
User clicks on link, goes to webflow page and add in some information.
Webflow form submits info to the server, this should contain the transaction I’d and the other form fields.
Can this be done?