List calculation difficulty

Hi, I am pretty new to grasshopper and have very little VB experience, so as you can imagine the learning curve is steep trying to create a script for grasshopper.  I am trying to create a script that will take a list and go down the list one by one and calculate an array.  It gets complicated in that the array created is the the length of the list squared and has data calculated based off of the value in the array immediately preceding the new value calculated.  I added the errors I am getting in the code, but I suspect there may be more issues.

Private Sub RunScript(ByVal Dist As Double, ByVal Scale As Double, ByVal Speed As List(Of Double), ByVal ActVol As List(Of Double), ByRef Basis As Object)
    Dim Val As Integer = (Dist / Scale) + 1
    Dim Ref As Integer = 1
    Dim Index As Integer
    Dim Above As Integer
    Dim AIndex As Integer
    Dim Below As Integer
    Dim BIndex As Integer
    Dim Cal (Val^2) As Double

    Do While Ref < Val
      Index = (Ref - 1) * Val + Ref
      Cal(Index) = ActVol(Ref)
      Above = Ref + 1
      Below = Ref - 1

      Do While Above <= Val
        AIndex = (Ref - 1) * Val + Above - 1
        Cal(Index) = Cal(AIndex) + Speed * Scale * (ActVol(Above) - Cal(AIndex)) Error: Opperator '*' is not defined for types 'System.Collections.List(Of Double)' and 'Double'
      Loop

      Do While Below > 0
        BIndex = (Ref - 1) * Val + Below + 1
        Cal(Index) = Cal(BIndex) + Speed * Scale * (ActVol(Below) - Cal(BIndex)) Error: Opperator '*' is not defined for types 'System.Collections.List(Of Double)' and 'Double'
      Loop

      Ref = Ref + 1
    Loop

    Basis = Cal

  End Sub