# File lib/ruote/exp/fe_undo.rb, line 81
    def apply

      ref = attribute(:ref) || attribute_text
      ref = ref.strip if ref

      tag = (ref && ref != '') ? lookup_variable(ref) : nil

      @context.storage.put_msg(
        'cancel',
        'fei' => tag,
        'flavour' => self.name == 'kill' ? 'kill' : nil
      ) if Ruote.is_a_fei?(tag)

      reply_to_parent(h.applied_workitem)
    end