if numeric_prefix then
        if tonumber(numeric_prefix) > 0 then  -- skip 0000
          app.Filename[root] = filename
          table.insert(app.Filenames_to_load, filename)
          app.Final_prefix = math.max(app.Final_prefix, tonumber(numeric_prefix))
        end

      if numeric_prefix and tonumber(numeric_prefix) > 0 then  -- skip 0000
        app.Filename[root] = filename
        table.insert(app.Filenames_to_load, filename)
        app.Final_prefix = math.max(app.Final_prefix, tonumber(numeric_prefix))