I need to plot in extjs 3.0. Here 's how I'm doing and not work for me. thanks

this.storeG = new Ext.data.JsonStore({

fields:['name', 'visits', 'views'],

data: [

{name:'Jul 07', visits: 245000, views: 3000000},

{name:'Aug 07', visits: 240000, views: 3500000},

{name:'Sep 07', visits: 355000, views: 4000000},

{name:'Oct 07', visits: 375000, views: 4200000},

{name:'Nov 07', visits: 490000, views: 4500000},

{name:'Dec 07', visits: 495000, views: 5800000},

{name:'Jan 08', visits: 520000, views: 6000000},

{name:'Feb 08', visits: 620000, views: 7500000}

]

}),



Ext.chart.Chart.CHART_URL ='../../gfx/charts.swf',

this.columnChart = new Ext.chart.ColumnChart({

store: me.storeG,

xField: 'framework',

yField: 'users'

}),



this.win = new Ext.Window({

title: 'Ejemplo de GFK de Barra',

id:'lolo',

width:200,

height:200,

layout:'fit',

collapsible: true,

border:false,

modal:true,

titleCollapse: true,

items:this.columnChart

}),

this.win.show();

I need to plot in extjs 3.0. Here 's how I'm doing and not work for me. thanks