I second [id://ikegami]'s comments. If anyone outside you module needs to look at or set the value, you should provide methods or functions for them to use. This simplifies not only your immediate problem, but opens an actual API for clever things in the future.

If you had the methods, knowing the name of the module and the name of the method (even if they are in variables) is far preferable to the games needed to make direct access work.

Further (added later), you should probably implement an import method in the bar class. It will receive the caller's name, making it even easier to do whatever it is you are doing.

Phil

Update: Added the part about import.