// Modify the class. Apply a shift in rate value of Shift ( ShiftValue(0,0.01) means 0.01 for first element)
public void ShiftValue(int Index, double Shift)
{
RateSet newRateSet = ((RateSet)List[Index]); // get 'Index' element
newRateSet.SetValue(newRateSet.V + Shift); // set new value
List[Index] = newRateSet;
}