Error accessing product object method

Hello Ihave problem in a java object class that is “error accessing product object method” in my code

Set cDoc = s.DocumentContext

If Not cDoc Is Nothing Then

	

	agID$ = cDoc.SuppID(0)

	If Fulltrim(agID$) <> "" Then

		Dim jS As JavaSession

		Dim jC As JavaClass

		Dim jO As JavaObject

		Set jS = New JavaSession()

		Set jC = jS.GetClass("openBISConnection")

		Set jO = jC.CreateObject

My problem is not set java class for that my java object also not set so please help me if u know anythings about it.