PWM.DutyCycle

using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;

namespace ShieldBase_PWMTest
{
    public class Program
    {
        public static void Main()
        {
            PWM led = new PWM(Cpu.PWMChannel.PWM_3, 1000, 0.5, false);
            led.Start();
            for (int i = 0; i < 100; i++)
            {
                Debug.Print(i.ToString());
                led.Stop();
                led.DutyCycle = i; //EXCEPTION
                led.Start();
                Thread.Sleep(100);
            }


        }
    }
}

/*
Throws:
An unhandled exception of type 'System.InvalidOperationException' occurred in Microsoft.SPOT.Hardware.PWM.dll
*/