Share tooltips in plotting a chart

Share tooltips in plotting a chart

  
Anyone ever try to plot a chart with shared tooltips. I found that highchart support:
 tooltip: {
            crosshairs: true,
            shared: true
  },
But when I applie those code to my advance format. I only got the synced maker. But the tooltip box somehow can not show out. 
Anyone knows how to solve this issue? 
Thanks in advance!
-Cathy
Hi All!
if anyone knows, please share.

Thanks a lot!
Artur

Cathy Wei wrote:
Anyone ever try to plot a chart with shared tooltips. I found that highchart support:
 tooltip: {
            crosshairs: true,
            shared: true
  },
But when I applie those code to my advance format. I only got the synced maker. But the tooltip box somehow can not show out. 
Anyone knows how to solve this issue? 
Thanks in advance!
-Cathy
It seems I found the solution. 
You have to disable 'formatter' function by add line like below.

tooltip: {
            shared: true,
            formatter: false,
  },