Accessing a function with parameter that is added using AddHostObjectToScript returns "Parameter is incorrect."

Description
Hello, I'm new to WebView2 and I've been trying to understand how the code-sharing aspect of it works. Recently, I have been trying out the Host object approach and it only works for me when the function has no required parameter.

Version
SDK:
Runtime:
Framework: WinUI
OS: Win10

Repro Steps

I have tried passing a parameter in my Angular app it like this:
var result = window?.chrome?.webview?.hostObjects.sync.myObject.SayHello("John");

and I keep on getting this error:

I have also tried using the following code:
window?.chrome?.webview?.hostObjects.sync.myObject().SayHello("John");

and it gives a different error:

This is what my code behind looks like:


**NOTE: I am using an interface as webView.CoreWebView2.AddHostObjectToScript() throws an NotImplementedError

Screenshots

Additional context

AB#34516976

Start with the WinUI host-object setup and the Angular calls to window.chrome.webview.hostObjects.sync.myObject.SayHello("John") and the alternate invocation shown in the issue. Reproduce both errors using the reported WebView2 configuration, then establish whether parameterized SayHello calls are expected to work and document the confirmed behavior.