Need Help Adding Parameters to addWatermarkFromText using VBA

After three days of banging my head on a wall, I got this to work:

Public Sub AddText()

    Dim pdApp As Acrobat.AcroApp
    Dim pdDoc As Acrobat.AcroPDDoc
    Dim jso As Object
   
    Set pdDoc = CreateObject("AcroExch.PDDoc")
    pdDoc.Open ("c:\Test\Test.pdf")
   
    Set jso = pdDoc.GetJSObject
    jso.addWatermarkFromText ("Test")

    pdDoc.Save 1, "c:\Test\Test.pdf"
    pdDoc.Close
    Set pdDoc = Nothing
    MsgBox "Done"

End Sub

However, every time I try to add parameters to jso.addWatermarkFromText I get an error message - something is wrong with my syntax I suppose but i have tried every example I could find and nothing is working for me.  Please help - all of the default parameters are find, just need the text to be at the top of the page, not the center.