[Solved]-highcharts : set title on exporting-Highcharts

put this function in your document ready function below is a code for changing highcharts print prototype and just for the patch or to make it work put rangeselector option in your exporting and set it to false as mentioned below you can set it to your needs in future

     highcharts.wrap(highcharts.chart.prototype, 'print', function (proceed) {

                    var applymethod = function (whattodo, margin) {
                    this.extratopmargin = margin;
                    this.resetmargins();
                    this.setsize(this.container.clientwidth , this.container.clientheight , false);

                    this.settitle(null, { text: 'set title here' :'});

                    this.rangeselector.zoomtext[whattodo]();
                    $.each(this.rangeselector.buttons, function (index, button) {
                        button[whattodo]();
                    });
                };
                if (this.rangeselector) {
                    var extramargin = this.extratopmargin;
                    applymethod.apply(this, ['hide', null]);
                    var returnvalue = proceed.call(this);
                    applymethod.apply(this, ['show', extramargin]);
                    this.settitle(null, { text: '' });
                } else {
                    return proceed.call(this);
                    this.settitle(null, { text: '' });
                    this.yaxis[0].setextremes();
                }                       }


    });

and in chart option set this (change it according to you need to, i am just putting my code for reference )

     exporting: {
            scale: 1,
            sourcewidth: 1600,
            sourceheight: 900,

            chartoptions: {
                rangeselector: {
                    enabled: false
            },
    }

you can define this parameter in exporting.

http://api.highcharts.com/highcharts#exporting.chartoptions

http://jsfiddle.net/bdhjm/

exporting:{
            chartoptions:{
                title: {
                    text:'aaaaa'
                }
            }
        },