This routine is available starting with Power Scripts 4.0.0.
Retrieves a structure containing information about a version that has been updated.
A JVersion value containing the version data.
logPrint("INFO", "Result of listener: " + getOldVersionFromEvent());
The result is a structure containing the version id, name, description, project key of the version, start and release dates, and information on whether the version is archieved or released.