BW custom hierarhies HANA attibutes

Dear all,

I have a spesific implementation for virtual hierarchies match with hana attributes.The main concern is to implement custom hierarchies to /ERP/MATL_GROUP.I have already created the text nodes in parent and childs but my doubt is how to match with hana attribute FCO_C_MATERIAL_GROUP.I found this article how to implement this parent child https://blogs.sap.com/2013/08/06/consuming-bw-parent-child-hierarchy-in-hana-a-workaround/ also i fount that with /ERP/* master data the method is through virtual hierarchies and exactly with hierarchy class like CL_FCOM_IP_HRY_READER_GLACCT

What is the right method?

Best Regards

George