Iam following according to the procedure providedin the link "http://experience-aem.blogspot.in/2013/12/aem-cq-56-adding-images-in-multifield.html" and using the same js file for adding images to a multifield,but am getting an error of "Cannot read property 'name' of undefined" in the js file of clientlibs.How can i clear the error and add the images to a multifield?