+
+(defvar org-ref-helm-user-candidates '()
+ "List of user-defined candidates to act when clicking on a cite link.
+This is a list of cons cells '((\"description\" . action)). The action function should not take an argument, and should assume point is on the cite key of interest.
+")
+
+;; example of adding your own function
+(add-to-list
+ 'org-ref-helm-user-candidates
+ '("Example" . (lambda () (message-box "You did it!")))
+ t)
+