Is it possible to track user variable changes made to definition

Summary:

In Oracle EPM Planning, under Tools> Variables (not user preferences : user variables), is it still not possible to audit any changes made to the user variable or substitution variable definitions?

Content (please ensure you mask any confidential information):

In situations where there are multiple admins, it's possible that unintended changes to these variables are made which cause system wide issues in forms and business rules. It would be good to understand if there was a way have this available in audit, more to be able to reset the values to what was originally defined.

Version (include the version you are using, if applicable):