extjs 自定义函数传参

var panelDeploy=Ext.create('Ext.panel.Panel',{
				title:'面板'+count,
				id:'aaaa'+count,
				//layout:'fit',
				width:400,
				height:300,
				frame:true,
				draggable:true,
				resizable:true,
				bodyPadding: 10,
				items:[{
					xtype:'button',
					text:'配置',
					id:'set'+count,
					handler:function(){addChart(count);}, 
					height:30,
				}]								
				
													
			})	;

	var addChart=function(s){
		var ss='aaaa'+s;
	}

addChart为自定义函数，为所传的参数