Firing event in renderer issue

Question

I am using highcharts in my lightning components which is embedded in a lightning app. When clicking on the chart , I am firing an event. the method to draw the chart is called from renderer. And the security review says "You should not fire an event in a renderer" eventhough the event is fired only when it is clicked. The code snippet is shown below.

  events: {
    click: function () {
       var dataValue = this.y;
       var categoryName = this.series.name;

       var updateEvent = component.getEvent("updateExpense");
       updateEvent.setParams({ 
          "dataValue": dataValue,
          "categoryName"" categoryName
       });
       updateEvent.fire();
    }
  }

What should I do here, because its an inevitable functionality.
Any help would be appreciated.