Flash CS5 - document class relative path & package location

Question

It seems I have no trouble pointing an FLA's document class to my project's class package when the FLA is at the same root level as the package's top-level directory. However, if the FLA is nested in a sub-directory, then relative paths to a class nested in the package will not work.
example package & class location : com.company.project.ClassName
Case1 :
Package location : \MyProject
FLA location : \MyProject
where document class path is : "./com/company/project"
Case 2 ( does not work ) :
Package location : \MyProject
FLA location : \MyProject\MySubFolder
where document class path is : "../com/company/project"
If someone can provide an explanation as to why nested FLAs can't point to custom packages in parent-level directories, OR demonstrate how this can be done, it would be much appreciated.
Now that I think on, both paths are relative, which makes this more confusing.
Thank you.

Answer 1

You are correct.
I'm setting the "Document class" of an FLA file to a custom Class.
The class is embedded/nested in the package directories of my project.
The FLA is nest not at the same level as the root of the package, but in a sub-directory.
Therefore, I need a relative path to point to the parent directory, then to the package.
The occurs in both Win and Mac.
I'm almost expecting someone to say FLAs can only point to packages in the same directory, but does not seem correct. Application-level classpaths can reference anywhere on your system, but are global. Document-level classpaths should be able to point to relative paths since a project needs to be portable, right? See attached image for example.