Fields in Headers and Footers in RoboHelp 11

I've been trying out the new Headers and Footers feature in RH11 for printed documentation.

When you create a master page to use as a  basis for your header or footer there is are several buttons that appear on a toolbar when you view the header or footer for the master page. The buttons allow you to switch between header and footer, insert page numbers, and to insert the chapter name. When you insert the chapter name, the following HTML code is added to the master page:

<?rh-variable_start

     name="pd-chap-name" value="&amp;lt;&amp;lt;PD Chapter Name&amp;gt;&amp;gt;" ?>&lt;&lt;PD Chapter Name&gt;&gt;<?rh-variable_end ?>

When you generate your Word document this variable is converted into the Word StyleRef field code {STYLEREF "Heading 1"\*MERGEFORMAT} and added to the header or footer, so the header or footer will display the next Heading 1 in your document. Unfortunately you don't seem to be able to use any other variables apart from the Chapter name variable. I would like to be able to specify that Heading 2 appears in the header or footer.

If you double click on the "pd-chap-name" variable in the master page the fields dialog opens and displays the default format for the field which is &lt;&lt;Chapter Name&gt;&gt;

Does anyone know how the syntax for the default format works? It's not documented anywhere as far as I can see.

Also is it possible to create fields in RoboHelp?

Thanks in advance