Access Jso object

Hi All,
 
Pls help me to solve this problem.
I am tring to access Acrobat PDF through VB.NET Ok.
 
Through reference i am adding Acrobat Library.
 
i.e.
 
Add Reference - Com - Adobe Acrobat 7.0 Type Library
 
Dim app As Acrobat.CAcroApp
Dim pddoc As Acrobat.CAcroPDDoc
Dim avdoc As Acrobat.CAcroAVDoc
Dim jsoobj As Object
 
In Form load, I am creating the instance of class
 
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
app = CreateObject("AcroExch.App")
app.Show()
pddoc = CreateObject("AcroExch.PDDoc")
avdoc = CreateObject("AcroExch.AVDoc")
End Sub
 
I opening the PDF file through button.
 
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim n As Integer
pddoc.Open("D:\test\1.pdf")
app.Show()
jsoobj = pddoc.GetJSObject() - here we are accessing the acrobat JavaScript methods and properties
jsoobj. - here i should get all acrobat javascript methods, but i am not getting.
jsoobj.Equals
.GetHashCode
.GetType
.ReferenceEquals
.ToString
End Sub
 
When i access JSO object then i should get all javascript methods but i am not getting. What i am doing wrong? Please help me to solve this.
 
Thanks....