View doesn't send model in post-method

I am new to ASP.NET and trying to create a Web UI for a project of mine.

The user should be able to edit a config file of the other application. For that reason he can select a config line from a list and gets a new form to edit the actual line.

If I then use the POST method to submit the result the parameter contains the default values.

The view:

@model Config

@{
    ViewData["Title"] = "Configuration";
}

<div class="card">
    <div class="card-header">
        <h5>Edit Config</h5>
    </div>
    <form asp-action="EditConfig" method="post">
        <div class="card-body">
            <div class="row">
                <div class="col form-group">
                    <label asp-for="Name">@Model.Name</label>
                </div>
            </div>

            <div class="row">
                 <div class="col form-group">
                    <input asp-for="Value" class="form-control" />
                </div>
            </div>

        <input type="hidden" value="Type" id="Type" />
        </div>
        <div class="card-footer">
            <button type="submit" class="btn btn-primary">Speichern</button>
        </div>
    </form>
</div>

The POST method in the controller:

[HttpPost]
public IActionResult EditConfig(Config config)
{}

The model class Config:

public class Config
{
    public string Name { get; set; }
    public object Value { get; set; }
    public Type Type { get; set; }

    public Config(string name, object value, Type type)
    {
        Name = name;
        Value = value;
        Type = type;
    }

    public Config() : this("", "", typeof(Type)) { }
}

I tried to use hidden inputs but that doesn't seem to make a difference since even the Value property doesn't receive a value.

Is the Type property messing things up here?

UPDATE

I was able to get it somewhat working thanks to David´s comment and RG Orobia´s answer.
The problem seams to be the types of the properties.

The code for the view is now:

@model Config

@{
    ViewData["Title"] = "Configuration";
}

<div class="card">
    <div class="card-header">
        <h5>Edit Config</h5>
    </div>
    <form asp-action="EditConfig" method="post">
        <div class="card-body">
            <div class="row">
                <div class="col form-group">
                    <label asp-for="Name">@Model.Name</label>
                    <input hidden asp-for="Name" class="form-control" />
                </div>
            </div>

            <div class="row">
                 <div class="col form-group">
                    <input asp-for="Value" class="form-control" />
                </div>
            </div>

            <div class="row">
                <div class="col form-group">
                    <input hidden asp-for="Type" class="form-control" />
                </div>
            </div>
        </div>
        <div class="card-footer">
            <button type="submit" class="btn btn-primary">Speichern</button>
        </div>
    </form>
</div>

However the Type property still doesn't get the correct value, which isn't really a problem for me but i thought i still list it here.

It seems like <code>Value</code> cannot be serialized. One workaround would be to change <code>Value</code> to type <code>string</code> and then cast the value to whatever type you want on the backend.