Go4Expert - Help With WaitHandle.WaitAll()

Hello,

I am trying to create a program that executes threads, waits until they are finished and then executes some more code.
When I run it, I recieve a "Object not set to an instance" error on WaitHandle.WaitAll(Tasks). Why does this occur?, WaitHandle.WaitAll is a static method.

Hope someone can help

Code:

Module Module1



Dim Tasks(1) As AutoResetEvent



<MTAThread()> Sub Main()

        Tasks(0) = New AutoResetEvent(False)

        Tasks(1) = New AutoResetEvent(False)

        Tasks(2) = New AutoResetEvent(False)



        ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf T1), Tasks(0))

        ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf T2), Tasks(1))



         WaitHandle.WaitAll(Tasks)

        ' Do some Tasks

    End Sub

   

    Sub T1(ByVal state As Object)

        System.Console.Write("In T1")

        Thread.Sleep(3000)

        Tasks(0).Set()

    End Sub



    Sub T2(ByVal state As Object)

         System.Console.Write("In T2")

         Thread.Sleep(3000)

         Tasks(1).Set()

    End Sub



End Module