in a chart there are several criteria are available. If Site1 is selected, all sites from Site2 should be displayed in a stacked chart. If a value in Site2 "AA " is selected, all entries from Site3 is available. The listbox “Class” communicates with Site1, Site2 and Site 3 and shouldn’t be shown, but as a criterion in the selection are used.
Can this selection also work with the Hierarchy tree on left side?
Site1 is location_class = BU
Site2 is location_class = BS
Site3 is location_class = Site