[flex_india:13833] How to create summary in GroupingCollection -- AS3

[VN]

Hi All,

I have a function to create the grouping (two levels), which is the
data provider for Advanceddatagrid. I want to add summary at the group
node. How to do that?
eg
     Node1(20)
         Node1.1(5)
         Node1.2(15)
    Node2(10)
          Node2.1(8)
           Node2.2(2)

This is my function.

public function resultGroupByLane():void{

               var mygroup:GroupingCollection=new
GroupingCollection();
                mygroup.source = model.gatetransaction;

                var group:Grouping = new Grouping();
                var gf:GroupingField = new GroupingField("laneid");
                var gf1:GroupingField = new GroupingField("wtaskid");

                group.fields=[gf,gf1];


                mygroup.grouping = group;


                mygroup.refresh();
                dggroup.dataProvider = mygroup;
       }

Thanks
VN

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