Use pybind with new DOM API (at PYNode). - MBScene.document is a PYDocument instead of PYSPDocument. - MBScene.root is a PYNode isntead of PYSPItem. - getNext() was replaced by next(). - attribute() was replaced by getAttribute(). - getID() was removed, use setAttribute() instead. - MBScene.dom was removed, use MBScene.document.root() instead. - MBScene.nodeToItem was removed, use PYNode.spitem instead.

Attach the onchange callback to your config to make tri-state checkboxes work (from change.js)

To read the checked options just do:
  $("SELECT-YOUR-CONTAINER").find("a.checked");
  or if you used "multiple : on"
  YOUR_TREE.selected_arr