How to start a callback on another thread ?

[PGilbert]

It is possible to start an event on another thread while using ⎕WS:

      ⎕WS 'Event' 'Select' 'DoIt&'

While using .Net, the following will not work:

      ⎕USING ← 'System.Timers,System.dll'
      tm1 ← ⎕NEW Timer(1000) ⍝ 1 second
      tm1.onElapsed ← (⎕OR 'DoIt&')
      tm1.Start

One way in .Net would be to call a dummy function first that will call the event on another thread. Is there another way ?