[NTG-context] Verbose numbers in swedish

Hi, I'm trying to get verbose numbers (i.e. "five" instead of 5) to work when \mainlanguage[sv] is set. I'm new to ConTeXt so I'm still struggling to grasp how everything fits together, but I found the spanish verbose numbers in core-con.lua, and added functions for swedish to match that which seemed relevant. I'm attaching my core-con.lua if that helps. (My additions start at line 1418) My question is, are there more places in other files that also need to be modified for this to work? If so, I would be grateful if you could point me in the right direction. There must be some step that I'm missing. Thank you. MWE where I expect the word "ett" instead of "1": \mainlanguage[sv] \starttext \convertnumber{words}{1} \stoptext