[NTG-context] interfaces.implement for key-value list

Hi, I’m trying to get a simple function with a variable number of parameters working: """ \startluacode interfaces.implement { name = "Autoren", public = true, arguments = { "hash" }, actions = function(t) logs.report('Autoren', 'interface got table of length ' .. #t) end } \stopluacode \starttext Info: \Autoren[text=Hans,melody=Hraban] \stoptext """ The table t has always length 0. Where’s my error? And is there documentation on interfaces.implement anywhere? Hraban