I would like to have Stride Length in a Data Field I am creating. How do I access it? Is it only accessible from RunningDynamicsData? I can't seem to get to it.
Yes, that data is only directly available from Toybox.AntPlus.RunningDynamicsData. You might be able to calculate a value based on the cadence, distance and time, but it might not end up being exactly the same as what is calculated internally.
I keep getting: Could not find symbol AntPlus. Symbol Not Found Error in compute (path\filename.mc:200) when trying to access Toybox.AntPlus.RunningDynamicsData.stepLength
The Fenix 3 is a Connect IQ 1 device, while AntPlus is only available on a device running a 2.4.0 or greater VM (CIQ2 or 3 device). Due to available resources, not all functionality is available on a CIQ1 device that's available on newer devices.