# File lib/ruote/dashboard.rb, line 1151
    def on_terminate=(target)

      msg = {
        'action' => 'launch',
        'tree' => target.is_a?(String) ?
          [ 'define', {}, [ [ target, {}, [] ] ] ] : target,
        'workitem' => 'replace' }

      @context.tracker.add_tracker(
        nil,             # do not track a specific wfid
        'terminated',    # react on 'error_intercepted' msgs
        'on_terminate',  # the identifier
        nil,             # no specific condition
        msg)             # the message that gets triggered
    end