[Solved]-Highcharts: Dynamically (programmatically) assign the axis name-Highcharts

I have created a demo fiddle to dynamically change y-axis title. Refer this JSFIDDLE

HTML:

<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>

<input type="button" value="Change Y-axis Title to 'My text'" id="my_btn">

JS (part of thec code to update the y-axis title on a button click):

var chart = $('#container').highcharts();
    $('#my_btn').click(function(){
        //alert('hey');
        chart.yAxis[0].update({
            title:{
                text:"My text"
            }
        });
        alert('Y-axis title changed to "My text" !');
    });

Refer Highcharts 'update' function documentation for further details.