HTML content in org chart

In the google playground for their org chart: http://code.google.com/apis/ajax/playground/?type=visualization#org_chart

They show you can put html tags, links, img in the f: value under the ‘Name’ field, for instance:
[{v: 'Jim', f: 'Jim<br/><font color="red"><i>Vice President<i></font>'}, 'Mike', null],

How can I do this with Chartboot? No matter how I format the data table, f: ends up ‘null’, and everything is in v: which doesn’t seem to allow HTML.

http://wordpress.org/extend/plugins/chartboot-for-wordpress/