RadzenUpload + RadzenProgressBar don't work together

Radzen.Blazor Components
4

I tried this: Bound a new double value to the progress bar:

<RadzenProgressBar @bind-value="progress2" Style="margin-bottom: 20px" />

and retured the converted int value:

 int progress;
    double progress2 {
        get
        {
            return Convert.ToDouble(progress);
        }
        set { }
    }

Which leads to:

InvalidCastException: Unable to cast object of type 'Microsoft.AspNetCore.Components.EventCallback1[System.Double]' to type 'System.Action1[System.Double]'.

But if i change progress from int to double, i get that bad boy here:

System.InvalidOperationException: Unable to set property 'valueChanged' on object of type 'Radzen.Blazor.RadzenProgressBar'. The error was: Unable to cast object of type 'Microsoft.AspNetCore.Components.EventCallback1[System.Double]' to type 'System.Action1[System.Double]'.