telerik Reporting with ObjectDatSource with IEnumerable

[Justin]

I have a object like below

   

public class MyCheckDto
   {
       public string ErrorMessage { get; set; }
       public IEnumerable<EarningsDto> FristEarnings { get; set; }
       public IEnumerable<EarningsDto> AnotherEarnings { get; set; }

   }

  public class EarningsDto
   {
       public decimal Field1 { get; set; }
       public decimal Field2 { get; set; }

   }

I get my data via web api, then i want to create a pdf using telerik reporting
i wanted to bind it to a objectdatsource but it does not show all the fields inside EarningsDto it shows FristEarnings as one single field. What am i doing wrong?