Echarts动态数据加载无法获取问题

var data = [];  
myChart.showLoading();  

// var data = {'lxt':'6.96%','zxts':25542,'lxts':1779,'zs_lv':93.04,'lz_lv':6.96};
$.get("json/HUANx2.json",function(data){
myChart.hideLoading();
var labelBottom = {
normal : {color: '#ccc'},
emphasis: {color: 'rgba(0,0,0,0)'}
};
var option = {
title: {
text: '总占' + data.lxt,
textStyle: {color:'#787878',fontSize:'17'},
subtext: '\n总量 ( '+ data.zxts +' )\n零占 ( '+ data.lxts +' )',
subtextStyle: {color:'#bbb',fontSize:'12'},
x: 'center',
y: 'center'
},
setoption : window.onresize = myChart.resize,
series : [
{
type:'pie',
radius : ['120', '85'], //内圈:外圈,
label : {position : 'center'},
data:[
{ value:data.zs_lv, itemStyle:labelBottom},
{ value:data.lz_lv}
]
}
]
}
});

myChart.setOption(option);

直接用var data能行，但用get就不行，json的格式与var data格式结构一样。请各位帮忙看看，谢谢！