Hi, I would like to add a custom action in the Media Context Menu in order to perform a simply operation as set a flag on image (with a true/false property added to media type Image). Basically this is the layout I would achieve:

I followed this tutorial
http://our.umbraco.org/wiki/how-tos/adding-a-new-button-to-the-media-menu

but basically nothing happens and no error is traised. I'm using 6.2.1. I would like also to differently color the background of the image with that flag set.