show node value in line chart

Hello everyone



I'm using EXT JS 4.1

I want to show the node value in the line chart through the label in session

My code is like these

label: {

display: 'under',

renderer: function(storeItem, item){

return (item.value[ 1 ] + '%');

}

}

However, it does not work.

It show only line chart.

Is I used the wrong element?

How should I modify?



Thanks in advance

Best Regards