[oXygen-sdk] Problem with the "insert.cross.reference" action in Oxygen Author 15.2

Hi, I am modifying the "insert.cross.reference" action in my dita framework to accept a specified format, type and scope attribute as shown in image 1 below. The type and scope attribute work fine but the format attribute is not output when I use this action after my modifications (see image 2). Am I missing any step here? Also, if I have to add these attributes when an xref is created in the Author view by drag and drop (from the ditamaps manager or project view), how would I go about doing it? Thanks! Nathan