Accessing applications through Citrix Client

hi, firstly apologies if this is posted in the wrong section, tried to have a guess at which forum it should be posted in and this seems most appropriate.

The company I work for has started using the Citrix platform and Extra has moved across to be used through Citrix. Now, when trying to call my application (Attachmate Extra) I get an error saying activex can't create the object and the debug shows the error on the line trying to call Extra. I assume I need to add some code in to fix this problem?

Here is my code to call Extra

Code:

---

'Get details from Excel
    dod = Range("D6"): If dod = "" Then MsgBox ("Please input Date of Death and try again"): End
    dod = Format(dod, "DD/MM/YYYY")
    Range("F8, F10").Select
    Selection.ClearContents
   
' Get the main system object
    Dim Sessions As Object
    Dim System As Object
    Set System = CreateObject("EXTRA.System")  ' Gets the system object
    If (System Is Nothing) Then
        MsgBox "Could not create the EXTRA System object.  Stopping macro playback."
        Stop
    End If
    Set Sessions = System.Sessions

    If (Sessions Is Nothing) Then
        MsgBox "Could not create the Sessions collection object.  Stopping macro playback."
        Stop
    End If
   
   
'--------------------------------------------------------------------------------
 '  Set the default wait timeout value
        g_hostsettletime = 1500

    OldSystemTimeout& = System.TimeoutValue
    If (g_hostsettletime > OldSystemTimeout) Then
        System.TimeoutValue = g_hostsettletime
    End If

' Get the necessary Session Object
    Dim Sess0 As Object
    Set Sess0 = System.ActiveSession
    If (Sess0 Is Nothing) Then
        MsgBox "Could not create the Session object.  Stopping macro playback."
        Stop
    End If
    If Not Sess0.Visible Then Sess0.Visible = True
    Do While Sess0.Screen.OIA.Xstatus <> 0
                DoEvents
                    Loop
   
' This section of code contains the gubbins
Dim Sys As Object, Sess As Object, MyScreen As Object, MyArea As Object
Dim ScrnChk As String, scrnchk1 As String, ScrnChk2 As String, PFKey As String

Set Sys = CreateObject("EXTRA.System")
Set Sess = Sys.ActiveSession
Set MyScreen = Sess.Screen

---

I get the debug on the line:

Code:

---

Set System = CreateObject("EXTRA.System")  ' Gets the system object

---

Any help would be greatly appreciated

thanks