Indeed - I should have checked, I tried this with the TeXLive version. With the current beta it works.
Thank!

Matthias

On May 23, 2014, at 7:37 AM, Aditya Mahajan <adityam@umich.edu> wrote:
>> 
> 
> Strange. What version of context are you using? 
> 
> Aditya
> 
>