Currently on Fenix 3 the Lap Ascent is not working due to a bug (https://forums.garmin.com/showthread.php?228875-Wrong-Lap-Ascent-and-Last-Lap-Ascent-Do-you-have-the-issue-on-your-F3)
I am not really into app development: would it be possible to program such data field via IQ Connect, or does the API only provide access to the buggy LAP ASC value and hence it's not possible to calculate the real ascent for the lap?
Cheers!
Karol