[NTG-context] Wondering how to get bibliography sorted by author

Hans, I see on the wiki that MKIV has bibliography reenabled. I put this code in my document: \setupbibtex[database={mybib},sort=author] text text text \completepublications[criterium=all] \placepublications[criterium=all] but the references are ordered by occurance NOT alphabetical by author. Could you point me in the right direction to get the list alphabetically sorted please? barney