Will we ever be able to pass complex objects into and out of our API's ?

Hello
Will we ever be able to pass complex objects into and out of our API's ?

I have follow example:

   var dataObj= {nameX: 'max monster',messageX: 'lorem ipsum...'};
   async function sendData(){
        let res =  await chrome.webview.hostObjects.sync.eventForwarder.SendData(dataObj);
	console.log(res);
   }

In C# API:

using System;
using System.Runtime.InteropServices;
using System.Windows;
using Microsoft.Web.WebView2.Core;

namespace TestWebView2
{
    public partial class MainWindow : Window
    {
       
        public MainWindow()
        {
            InitializeComponent();
            InitializeAsync();
        }

        async void InitializeAsync()
        {
            await webView.EnsureCoreWebView2Async(null);
            WebView_CoreWebView2Ready();
        }
        private void WebView_CoreWebView2Ready()
        {
            webView.CoreWebView2.AddHostObjectToScript("eventForwarder", new EventForwarder());
        }
   }

    public class DataObject
    {
        public string nameX = "";
        public string messageX = "";

        public DataObject() { }
    }

    [ClassInterface(ClassInterfaceType.AutoDual)]
    [ComVisible(true)]
    public class EventForwarder
    {
        public string SendData(DataObject data)
        {
            return "hasCall with parameters: " + data.nameX;
        }
    }
}

How can I receive the ObjectData on the API side as shown in the example above?

As described above, the example would not work because the following message comes back:

VM6:1 Uncaught (in promise) Error: Schnittstelle nicht unterst�tzt (0x80004002)
    at RemoteMessenger.postSyncRequestMessage (<anonymous>:1:10471)
    at Function.applyHostFunction (<anonymous>:1:22650)
    at Object.apply (<anonymous>:1:15398)
    at SendData (test.html:87)
    at HTMLDivElement.onclick (test.html:93)

Thank for your answer

AB#27139995