[TYPO3-mvc] fluid f:groupedFor grouping by object?

[Alex Bailey]

Hi,

Am I missing something or is it not possible to group after a object 
with this fluid helper? I can group my list just fine by using a 
property field like "startdate" but when I use a object to group I don't 
get any result.

Example

Object
startdate -> 15.10.2010
employee -> object
               name -> test

<f:groupedFor each="{list}" as="entrys" groupBy="employee" 
groupKey="employee"> <- doesnt work

<f:groupedFor each="{list}" as="entrys" groupBy="startdate" 
groupKey="startdate"> <- fine

When i group by startdate everything is a-ok but employee doesn't work.

Is fluid incapable of doing so or am I doing something wrong?

Thanks in advance

regards

Alex