Function runs 'onlick' but not on 'onchange' in blazor app with event

Question

I have two ways of running function in my Blazor app.

<h1 @onchange="e => action(message)">@message</h1>
<button @onclick="e => action(message)">Click</button>

The first code line should work on change meanwhile the second works on click. I cannot find out why the first one is not working. My program logic is as follows:

@code {
GameManager _gameM;
public string message { get; set; } = "test";
protected override void OnInitialized()
{
_gameM = new GameManager();
_gameM.MainLoopCompleted += (e, o) => StateHasChanged();
_gameM.MainLoopCompleted += (e, o) => special();
}
public async Task action(string message)
{
var confirmed = await js.InvokeAsync<bool>("confirm", $"{message}");
if(confirmed)
{
Console.WriteLine("working");
}
}
public void special()
{
message = _gameM.message;
}
}

In this code I have a line:

_gameM.MainLoopCompleted += (e, o) => special();

Which for sure changes @message inside <h1>, however, the function action() is not triggered by this change. Why is it so and how to solve it?