Some customers want to use variables in the dynamic media url instead of uploading the image/document as a static property

So for example they want to reference a registration number that's saved in the custom fields for all their contacts

they want the media url (dynamic) to be : https://www.example.com/{{customer.context[custom.registrationno]}}.pdf

so that the pdf on their servers can be fetched for each person dynamically

Requested by : evento