Refresh RibbonItem in Bricscad V21

Reithinger
Reithinger
in Programming and customization

Hi,
I have a Problem bei Refresh a RibbonItem Image.
Here my Code
@RibbonItem item = base.RibbonPanel.FindItem(AKGStrings.IdVersionSystem);
if(item != null)
{
item.LargeImage = base.BitmapToImageSource(Resource.InfraSignUpdate32);
}

But the LargeImage doesn't Change.
It give not a Refresh Funktion to the RibbonItem.
How can I refresh my RibbonItem ?
Thanks for your Reply

Fabrice