[NTG-context] index: distinguish entries by pagestyle

Hi there, I got a question considering the registers. I'd like to distinguish between the definition of some term and its appearance/use somewhere else (boldface vs. normal font of page number for instance). The garden provides a solution, which does not seem to work for me: %%%%%%%%%%%%%%%%%%% \setupregister[index][nb][pagestyle=bold] \starttext My \index[nb::dog]{dog}dog is a cat\index{cat}. \placeindex \stoptext %%%%%%%%%%%%%%%%%%% (modified from http://wiki.contextgarden.net/Registers). What I'd like to have is, that dog appears with a bold page number and that cat doesn't. ConTeXt ver: 2013.01.10 01:04 MKIV fmt: 2013.1.11 Cheers, Andreas