[NTG-context] issue with \xmlattribute{#1}{.}{id}

Dear list, in an environment to parse an XML document, I use \reference[\xmlattribute{#1}{.}{id}]. Since it doesn’t do what I need, I checked the pure command "\xmlattribute{#1}{.}{id}".

From id="spieker-weiss" and id="computer-mind", I get "spieker-weissmain::4103" and "computers-mindmain::4384".

What am I missing there or how could I get pure identifiers with no "main::9999" suffix? Many thanks for your help, Pablo -- http://www.ousia.tk