private async Task UpdateImage()
 {
     if (settings != null)
     {
         await SetImageAsync(imageLogic.GetGaugeImage(settings.Header, currentValue, settings.MinValue, settings.MaxValue));
     }
 }
 private async Task UpdateImage()
 {
     await SetImageAsync(imageLogic.GetGaugeImage(header, currentValue, min, max));
 }