Reload on line chart

The following function is meant to clear the line chart and add a new point to the chart. However, it doesn't not work. Please can someone have a look
image

The following code works as expected:

<RadzenChart @ref="myChart">
    <RadzenLineSeries Data="myCollection" ValueProperty="Value" CategoryProperty="Category">
        <RadzenMarkers MarkerType="MarkerType.Square" />
        <RadzenSeriesDataLabels Visible="true" />
    </RadzenLineSeries>
    <RadzenButton Click="AddItem">Add Item</RadzenButton>
</RadzenChart>
@code {
    class MyItem
    {
         public string Category { get; set; }
         public double Value { get; set; }
    }

    IList<MyItem> myCollection = new List<MyItem>()
    {
        new MyItem { Value = 50, Category = "Category" },
    };

    RadzenChart myChart;

    void AddItem()
    {
        myCollection.Clear();
        myCollection.Add(new MyItem { Value = 100, Category = "Category" });
        myChart.Reload();
    }
}

line-chart