Launching a form with paramaters

In the forms developers guide, it states:

>the trigger would look like:
>form.runForm( 'myform.gfd', { 'division' : 101 } )
>That is, the parameters would be passed to runForm as a Python
>dictionary.

However this usage produces a traceback.  I need to launch another form
from a trigger, and to pass it a value.  I am guessing ether the above
usage is obselete, or it hasn't been implemented yet.

Anyone know how I can do this?

Alex