add custom metadata namespace in CQ DAM

Question

I'm trying to add custom metadata namespace to CQ DAM. I. e. URI http://example.com/ with prefix ex

• added namespace in /crx/explorer/nodetypes/index.jsp in Namespaces tab
• added line <ex = 'http://example.com/'> in /libs/dam/nodetypes/dam.cnd
• created /libs/dam/options/metadata/ex folder

then I can't set metadata property to the /libs/dam/options/metadata/ex folder, nor add any subnode to it. ("No matching property definition found" error).

What is the full procedure of adding custom metadata namespace in CQ DAM?

Answer 1

• Two first steps are alternative ways of doing the same thing.
• The created /libs/dam/options/metadata/ex folder should by sling:Folder not nt:Folder