Помогите написать модуль по работе с полилинией

Sub Example_AppendVertex()
    ' This example creates a polyline in model space.
    ' It then appends a vertex to the polyline.
    Dim plineObj As AcadPolyline
    Dim points(0 To 14) As Double
    ' Define the 2D polyline points
    points(0) = 1: points(1) = 1: points(2) = 0
    points(3) = 1: points(4) = 2: points(5) = 0
    points(6) = 2: points(7) = 2: points(8) = 0
    points(9) = 3: points(10) = 2: points(11) = 0
    points(12) = 4: points(13) = 4: points(14) = 0
    ' Create a lightweight Polyline object in model space
    Set plineObj = ThisDrawing.ModelSpace.AddPolyline(points)
    ZoomAll
    MsgBox "Append the vertex 4, 1, 0.", , "AppendVertex Example"
    Dim newVertex(0 To 2) As Double
    newVertex(0) = 4: newVertex(1) = 1: newVertex(2) = 0
    plineObj.AppendVertex newVertex
    ZoomAll
    MsgBox "The vertex 4, 1, 0 as been appended.", , "AppendVertex Example"
End Sub