Is there an actual resolution for this yet?  What was the result for the CQ-4210433 ticket?

AEM - 6.1: Component - granite/ui/components/foundation/form/fileuploadIf you create a fileupload field in a page properties dialog the drag and drop does not work. It will not allow you to drag and drop images from your assets. There is a built in example of this behavior that ships with 6.1.  Crea...

I am using sightly and java together.  I am having the same problem.  It seems as though sightly syntax does not allow the key of a hashmap to be anything other than a string.  In sightly when the key for my hashmap is a string I can make the original posters syntax work.  However when I make the ke...