getStoredPoints returning empty lists

[TungVietLe]

According to Top Level API docs,

getStoredPoints
returns the fifty most recent tracker predictions

But when I call it, the method return empty list.

[duwenlong2]

I am looking at the source code inside.

I saw him in var pass50=webgazer. getStoredPoints(); before
webgazer.params.storingPoints = true;
Five seconds later, he set : webgazer.params.storingPoints = false;
and then he used it webgazer. getStoredPoints()

[TungVietLe]

Where can you find it i wonder? I can't see the code in www/webgazer.js

[duwenlong2]

www=>js=>calibration.js
www=>js=>precision_store_points.js