Methods in Blazor Circular Gauge component

@using Syncfusion.Blazor.CircularGauge

<button style="margin-left:34px" @onclick="ChangePoinerValue">Change pointer value</button>
<SfCircularGauge @ref="gauge" Width="250px" Height="250px">
    <CircularGaugeAxes>
        <CircularGaugeAxis>
            <CircularGaugePointers>
                <CircularGaugePointer Value="50"></CircularGaugePointer>
            </CircularGaugePointers>
        </CircularGaugeAxis>
    </CircularGaugeAxes>
</SfCircularGauge>

@code {
    SfCircularGauge gauge;
    void ChangePoinerValue()
    {
        gauge.SetPointerValue(0, 0, 30);
    }
}