How to add a field to the membership cbregName panel-heading?

I am selling digital services associated to domain names such as hosting, ssl, dedicated ip, web management services etc.

When a user purchases more than one subscription, even of the same kind, there is a list like that at at the profile page:

Hosting Basic
Hosting Basic
Hosting Basic

I'd like to add a field aside the cbregName with the field of the domain name. How can I do it?

thanks

That's the plan name which does support substitutions, but the plan name isn't purchase dependent so I don't really so how you'll be able to do what you're wanting without a custom CB plugin acting on the plans display triggers and modifying the output. Looks like CB Auto Actions can do this below, but I'm not sure how you'll know which plan belongs to what domain.

Global
Triggers: onCPayBeforeDrawPlan
Type: Code
User: User
Access: Registered
Action
Method: PHP
Code: Parameters
References: Variable 1

With the above you'll notice every plan name turns to "test!" when logged in.