[NTG-context] \setupbreakpoints[compound] does not work?

Hi, in the following example I use \setbreakpoints[compound], I understood, that word-breaking would be made (or preferred) at hyphens. There could be a perfect line break at the hyphen of "-CC", but there is no break, and instead the complete word "AA-BB-CC" is printed, then partially in the margin. \setbreakpoints[compound] \showframe \version[temporary] \starttext .......................................................................................................................AA-BB-CC. And the next sentence. \stoptext Why that does not work? Huseyin