Spotfire CheckBoxHierarchyFilter Get/Set element by API

It is not possible to get/set the selection done on hierarchy filter from Python.
We often use to have two cluster on the same dataset. My aim is to copy the selection done on a Filter (with hierarchy type) from a DataTable to the same filter on one other DataTable (or just on a different filter schema). I'm reached to do it on other filter type but I can't do it for the Hierarchy type.

I thinks is needed a Method that get and set the filter hierarchy by array with a possibility to know if an element is checked or not.
Thanks,
Alessandro

Note: I already rase a case on support.tibco.com. The case number is 01443956 but they couldn't help me on it