Complex format for axis & tooltip

[Yvan]

Hi,

My x values are msec since epoch and I wish display it on x-axis and tooltip like hh:mm for instance with a function like this:

function parseDateTime(epoch){

    var date = new Date(epoch);

    return date.getHours() + ':' + date.getMinutes();

}

And with a chart configuration like this:

//...

tooltip: {

    visible: true,

    format: "{1:N2} m3 @ " + parseDateTime(xValue),

}

//...

Unfortunately I'm not able to retrieve the x value. The '{0}' joker may not be useful in such case. Has someone any idea how perform this task and even is it possible?

Thanks
Yvan