The demo Jeffrey used was based on much earlier code. MSH Beta 1 does not support this feature. A later version of MSH is planned for release shortly (i.e. PDC) and it's not there yet.

You should get onto the beta and take a look at the beta newsgroup. I've put up some details on Monad at www.reskit.net/monad. There's also a sample scripts page at http://www.reskit.net/monad/samplescripts.htm.