[NTG-context] Hyphen as separator for formulas

Hello everyone, I am using mkiv, and my qestion is: Is it possible to have a hyphen instead of a dot as a separator for formula references? I can achieve it by using \definestructureseparatorset[default][][-] but this changes all separators in my document (including section headers etc.). The command isn't referenced in the wiki, so I am at a loss if this is even possible, and how to achieve it. And \setupformulas[separator={-}] seems to have no effect at all. Thanks in advance!