I was trying to follow the documentation about getOxygenSaturationHistory, it fine when I use the simulator but deploying to actual device makes the app to crash and the stack trace is empty:
//DOCUMENTATION SAMPLE CODE
//USING THIS CODE WILL WORK ON SIMULATOR AND PHYSICAL DEVICE WITHOUT ISSUE
function getIterator() {
// Check device for SensorHistory compatibility
if ((Toybox has :SensorHistory) && (Toybox.SensorHistory has :getOxygenSaturationHistory)) {
// Set up the method with parameters
return Toybox.SensorHistory.getOxygenSaturationHistory({});
}
return null;
}
//MODIFIED CODE WITH DURATION AS OPTION
//USING THIS CODE WILL WORK ON SIMULATOR BUT WILL CRASH ON PHYSICAL DEVICE
function getIterator() {
// Check device for SensorHistory compatibility
if ((Toybox has :SensorHistory) && (Toybox.SensorHistory has :getOxygenSaturationHistory)) {
// Set up the method with parameters
return Toybox.SensorHistory.getOxygenSaturationHistory({:period=>new Time.Duration(3600*numHrs)});
}
return null;
}
Using both the source codes above for HR, Pressure, Alttitude and Temperature Sensor had no issues only with OxygenSaturation.
Did I do something wrong or is it a bug? 
