Good day billi,
this is currently not possible. "Periodic updates" are made for add-ons to listen for a new information. What you need is some substitution of your values into currently used "Location" container, which is not possible. I can only see an option to record hr values separately and offer to "track" bottom menu option "fill HR values" which should load track, fill values and same track back. Ah, overcomplicated and maybe not yet perfectly working over API. Sorry.