​Can the system customize the function of the two levels of variable fields?

Can the system customize the function of the two levels of variable fields?

Directly use the system as a content studio, which can design variable fields (Dear XXX), but the current customer needs are offline design templates (for example, there will be 10 variable fields), which are sent offline to consumers.

When returning offline information to the system, how should the system receive the information in the 10 changing fields?