jQuery Grid Plugin - jqGrid

Hey there,

I want to dynamically group my table-data so I'm using the "groupingGroupBy" Method. I want a specific sort order for the groups (e.g. first group level ascending and second group level descending). But it seems as if only the first group is sorted. It has no effect on the second level group.

Take a look at the following jsFiddle: http://jsfiddle.net/BHNHB/

if you click on the link "click me to group" only the id's (first level group) are sorted descending. The second level group (forenames) are not sorted at all. I used the following code snippet for grouping:

 $('#table').jqGrid('groupingGroupBy', ['id', 'forename'], {
            groupOrder: ['desc', 'asc']
 });

Thanks and cheers!