Change an attribute value depending of the folder

Hi.

Is that possible filter the enumareted values of an Attribute depending of its folder path?

e.g. I have a product called PROD1, and within this product 2 folders FOLDER1 and FOLDER2.

My document type has an attribute called CLASS.

I want that, if I create a document in FOLDER1 the possible values for CLASS attribute are F1-01 or F1-02, and if I create a document in FOLDER2 the possible values are: F2-01 or F2-02.

Was I clear? How can I do this?

Thanks