Ribbon xml vsto

[Jserrano]

Hello, I am using information from this article

http://msdn.microsoft.com/en-us/library/bb736142.aspx

and I would like to know if it is possible to update

The images from the control gallery through an event.

It is to say this function: "GetItemImage" it only retrieves images when
loading the ribbon and I need

the images to load again when displaying the control in case these were
replaced in the folder of origin.

I have adapted "GetItemImage" to load images from any folder and that it
work correctly, but I would like the gallery to update With the new images
from the folder.

Best regards