Excel 2010 vba autocad

Hello,

I am in Excel 2010 VBA editor and I am trying to run the routine shown below.
For some reason these two lines don't work.

Dim mylineobject As AcadLine
Dim CircleObj As AcadCircle

Any ideas?

Thanks

Kato01

Public Sub test()

'=======================================
A$ = "########0.0"
On Error Resume Next
Set acadApp = GetObject(, "AutoCAD.Application")
If Err Then
Err.Clear
Set acadApp = CreateObject("AutoCAD.Application")
If Err Then
MsgBox Err.Description
Exit Sub
End If
End If
acadApp.Visible = True ' AUTOCAD
acadApp.Top = 0
acadApp.Left = 0
acadApp.Width = 1024
acadApp.Height = 740
Set ObjAcad = GetObject(, "Autocad.Application")
ObjAcad.Visible = True
Set AcadDoc = acadApp.ActiveDocument
Set AcadUtil = AcadDoc.Utility
activeDoc.ActiveSpace = acModelSpace
'=================================================
Dim mylineobject As AcadLine '<============== problem 1
Dim CircleObj As AcadCircle '<============== problem 2
Dim startpoint(0 To 2) As Double
Dim endpoint(0 To 2) As Double
Dim CircleCenter(0 To 2) As Double
'FIRST LINE
startpoint(0) = 0
startpoint(1) = 0
startpoint(2) = 0
endpoint(0) = 1
endpoint(1) = 0
endpoint(2) = 0

'SECOND LINE
startpoint(0) = 0.5
startpoint(1) = -0.5
startpoint(2) = 0
endpoint(0) = 1
endpoint(1) = 0
endpoint(2) = 0

Set mylineobject = ThisDrawing.ModelSpace.AddLine(startpoint, endpoint)

'=========

CircleCenter(0) = 1.2: CircleCenter(1) = 22: CircleCenter(2) = 0
Set CircleObj = ThisDrawing.ModelSpace.AddCircle(CircleCenter, 15)
CircleObj.Color = acGreen
ZoomExtents
Set ACAD = Nothing
End Sub

Hi katto01

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Cheers