table editor doesn't create table header.

Hey guys,

i'm currently trying to configure the built-in table editor properly but i can't get it to create a table header. Our table model is leaned on the cals table model and built as follows:
<table>
<tgroup>
<colspec column=“name“/>...
<thead> (the header which makes the problems)
<row>
<entry> <p/> for a normal entry, <li> for a list item and <img> for a image </entry>
</row>
</thead>
<tfoot> row, entry... like in <thead> … </tfoot>
<tbody> row, entry like in <thead> and <tfoot... </tbody>

The roles i applied for the header

<x:node match="thead">
<x:role>tableheader</x:role>
<x:role>tablerowcontainer</x:role>
</x:node>

<x:node match="thead/row/entry">
<x:role>tableheadercell</x:role>
</x:node>

The editor offers the checkbox to select whether a header should be insterted or not but if selected that a header should be created a tbody, row is created.

Are the roles properly set?

Great. That did the job. But now the footer makes problems. I gave the tablefooter role to the tfoot element like this:
<x:node match="tfoot">
<x:role>tablefooter</x:role>
</x:node>
When i do this, the editor creates a new tgroup below the tgroup where tbody and thead is in and writes the colspec in the later tgroup. Like this:
<table>
<tgroup cols="">
<thead>
<row>
<entry />
<entry />
<entry />
<entry />
<entry />
</row>
</thead>
<tbody>
<row>
<entry />
<entry />
<entry />
<entry />
<entry />
</row>
<row>
<entry />
<entry />
<entry />
<entry />
<entry />
</row>
<row>
<entry />
<entry />
<entry />
<entry />
<entry />
</row>
</tbody>
</tgroup>
<tgroup cols="1">
<colspec colname="colA" />
<tfoot>
<row>
<entry />
<entry />
<entry />
<entry />
<entry />
</row>
</tfoot>
<tbody>
<row>
<entry />
</row>
</tbody>
</tgroup>
</table>

Ok thx for your help.