Matlab Mobile IOS9, setting SampleRate does not work at all, it keeps 10HZ no matter how I change the SampleRate

Matlab Mobile of R2016a says that the features they added is that they can edit the sampling rate, which I cannot agree with. The device I use is iPhone6s, The code is as follows:

m = mobiledev; 
m.AccelerationSensorEnabled = 1;
m.SampleRate=1; % or 100, 200, anyhow it doesn't work. 
m.Logging = 1;
pause(5); 
m.Logging = 0;

No matter what I set the sampleRate to be n, the actual sampling rate is 10HZ, not the value n I set. And I also check m.SampleRate, it just presents n. I cannot understand why. Help.