I see ... I didn't know that D4F charts were supplied by ProRealTime. Must be a sort of cut-down version, I suppose, if you can't add that indicator without creating it yourself. I don't know if you knew, but the full end-of-day charts from ProRealTime are free, and the streaming real-time charts are only about £30 per month for the full package of currencies and indices (but excluding the FTSE). I'm sure someone who uses D4F charts and knows more than I do will reply to you anyway, if you just hang on. If not, you could maybe try emailing D4F and/or ProRealTime and asking them. Sorry not to be able to answer you any better myself.