如何使用codebehind变量作为ValueConverter中ConverterParameter的输入

<TextBlock Text="{Binding SomeProperty, Converter={StaticResource MyConverter}, ConverterParameter={x:Static local:MyCodebehindVariable}}" />

public static string MyCodebehindVariable { get; set; } = "SomeValue";

<local:MyConverter x:Key="MyConverter" />

public class MyConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var codebehindVariable = parameter as string;
        // 使用codebehindVariable进行转换逻辑
        return convertedValue;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}