Object that has another object as property?

I've successfully made a call of an object created in C# from VB6

But the type of object I return in C# is an object with another object as a property

And I want to know if it is possible to get something like this:
object.object.message in VB6

what I've tried so far is something like:

vb Code:

'"program1"]
Dim ws As com_api.IwebServiceConnect
Set ws = New com_api.webServiceConnect
Dim response As com_api.Certificacion
Set response = New com_api.CertificacionTest
 
response = ws.Method("user", "pass", "C:\Users\file.xml", False) 'This doesn't work... but It should, the error message it throws is: the object doesn't accepts this property or method
 
Dim var As Variant
var = ws.Method("user", "pass", "C:\Users\file.xml", False) 'This works, but I don't know how to get the data from this Variant
 
'response = ws.Method("user", "pass", "C:\Users\file.xml", False)
MsgBox var