# File lib/ruote/exp/fe_define.rb, line 78
    def apply

      t = self.class.reorganize(tree).last

      name = attribute(:name) || attribute_text

      set_variable(name, [ h.fei['expid'], t ]) if name
        #
        # fei.expid : keeping track of the expid/branch for the subprocess
        #             (so that graphical representations match)

      reply_to_parent(h.applied_workitem)
    end