Ignition history JS API

Hi,
please specify how to use getIgnitionHistory() and getSensorsHistory() in JS API.

I perform code like this:

unit.getIgnitionHistory(1, from, to, 0, null, function(error, result) {
    console.log(error, result);
});
but get empty object for each unit. What can be wrong?

ivalFrom and ivalTo are the time intervals is seconds.