how to create Stacked Chart in silverlight

[dinesh.isuranga]

I have created a Column chart and Pie Chart using silverlight 4. but now i want to implement a Stacked Chart. But I have no Idea to implemnt it.

here is my data repository if anyone can please help..

public class DataList
    {
        public string SbuName { get; set; }
        public string Quarter { get; set; }
        public double Backlog { get; set; }
        public double PipeLine { get; set; } 
    }


List<DataList> reportData = new List<DataList>();


             reportData.Add(new DataList() { SbuName = "Asia Pacific", Quarter = "Q1", Backlog = 1265000.0, PipeLine = 1265000.0 });
            reportData.Add(new DataList() { SbuName = "Asia Pacific", Quarter = "Q2", Backlog = 6525000.0, PipeLine = 6525000.0 });
            reportData.Add(new DataList() { SbuName = "Asia Pacific", Quarter = "Q3", Backlog = 2351200.0, PipeLine = 2351200.0 });
            reportData.Add(new DataList() { SbuName = "US", Quarter = "Q1", Backlog = 2354500.0, PipeLine = 2354500.0 });
            reportData.Add(new DataList() { SbuName = "US", Quarter = "Q2", Backlog = 2235800.0, PipeLine = 2235800.0 });
            reportData.Add(new DataList() { SbuName = "US", Quarter = "Q3", Backlog = 2359000.0, PipeLine = 2359000.0 });
            reportData.Add(new DataList() { SbuName = "UK", Quarter = "Q1", Backlog = 6235000.0, PipeLine = 6235000.0 });
            reportData.Add(new DataList() { SbuName = "UK", Quarter = "Q2", Backlog = 9856300.0, PipeLine = 9856300.0 });
            reportData.Add(new DataList() { SbuName = "UK", Quarter = "Q3", Backlog = 12544000.0, PipeLine = 12544000.0 });
            reportData.Add(new DataList() { SbuName = "Australia", Quarter = "Q1", Backlog = 6985000.0, PipeLine = 6985000.0 });
            reportData.Add(new DataList() { SbuName = "Australia", Quarter = "Q2", Backlog = 2351000.0, PipeLine = 2351000.0 });
            reportData.Add(new DataList() { SbuName = "Australia", Quarter = "Q3", Backlog = 3258000.0, PipeLine = 3258000.0 });

thank you..