How to get new edge's TTS voices into C# .NET winforms app?

public static List<ISpeechObjectToken> globalVoicesObjectsList = new List<ISpeechObjectToken>();

private void FormMain_Load(object sender, EventArgs e)
{

    SpObjectTokenCategory otc = new SpObjectTokenCategory();

    otc.SetId("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Speech_OneCore\\Voices");

    ISpeechObjectTokens tokenEnum = otc.EnumerateTokens();

    foreach (SpeechLib.ISpeechObjectToken v in tokenEnum)
    {
        comboBoxVoice.Items.Add(v.GetDescription());
        globalVoicesObjectsList.Add(v);
    }

    SpObjectTokenCategory otc2 = new SpObjectTokenCategory();

    otc2.SetId("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Speech\\Voices");

    ISpeechObjectTokens tokenEnum2 = otc2.EnumerateTokens();

    foreach (SpeechLib.ISpeechObjectToken v in tokenEnum2)
    {
        string s = v.GetDescription(49);

        foreach (string s2 in comboBoxVoice.Items)
        {
            if (s == s2) goto nextVoice;
        }
        comboBoxVoice.Items.Add(s);
        globalVoicesObjectsList.Add(v);

    nextVoice:;
    }