热图数据基于X和Y坐标将颜色标记为红色

Question

我试图根据热图的x和y坐标突出显示单个细胞数据标签。 refer this fiddle, where it is implemented因为我在jasper中使用它，这种方法无法正常工作。任何人都可以告诉我如何使用格式化程序。

series:{ 
     data: data,
     dataLabels: {
                /*formatter:function(){ i'm having x and y cordinates and i wanted to plot the lable color and it should be surrounded with a square as given in sample fiddle*/}}

TIA