Tooltip binding

Hi,

I create a chartview with XBindingPath and YBindingPath, the series should show the Tooltips. My problem is, that the YBindingPath should show a value in percent - that works, but the Tooltip should show the real value. I have create a helper class

public class ChartValue
{
    /// <summary>
    /// Name
    /// </summary>
    public string Name
    {
        get;
        set;
    }
 
    /// <summary>
    /// Value
    /// </summary>
    public float Value
    {
        get;
        set;
    }
 
    /// <summary>
    /// Value in seconds
    /// </summary>
    public float Seconds
    {
        get;
        set;
    }
}

The current binding looks so: YBindingPath = nameof(ChartValue.Value). The Tooltip should show the Seconds value, is that possible? Thank you!