How to pass an object as a method parameter in vbscript

I am trying to do a little test in vbscript, so I created a very simple DLL in C # (I am new) and want to use it in vbscript.

C # code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace myNamespace
{
    public class myClass1
    {
        public string sVariable1="Variable content";
    }

    public class myClass2
    {
        public myClass1 myMethod2(myClass1 test)
        {
            return test;
        }
    }
}

and vbscript

Set oClass1 = CreateObject("myNamespace.myClass1")
Set oClass2 = CreateObject("myNamespace.myClass2")
WScript.Echo oClass1.sVariable1

Set return = oClass2.myMethod2(oClass1)
WScript.Echo return.sVariable1

after running vbscript, on the console I have "variable content" displayed by the first echo, and then I have the error "Microsoftsoft vbscript error, execution error, invalid call or procedure argument:" oClass2.myMethod2 ".

Can I pass an object this way?

Referring to note MK2. The problem is not with the return method, because the following code works.

        public myClass1 myMethod2()
        {
            myClass1 test = new myClass1();
            return test;
        }

and vbs

Set return = oClass2.myMethod2()

now on the console i have

Variable content
Variable content

But how to pass myClass1 object to vbs?