现在的J是这样的，想再加一个条件，让份额小于7的不显示箭头，要怎么改
function(){

var cl = this.seriesName; var sql = "map('"+cl+"','排量当年份额情况',2,5)";

var value1 = FR.remoteEvaluate(sql);

var value=(Number(value1)*100).toFixed(0);

if(value <0){ return '<p><img src ="../../help/picture/jiantou/向下箭头.png"  width="15" height="25" align="middle"></p>'; }

else {   return '<p><img src ="../../help/picture/jiantou/向上箭头.png"  width="15" height="25" align="middle"></p>'; }

}