Add missing callback
Add missing callback

1modm/StoryMapJS,cr3ative/StoryMapJS,BenHeubl/StoryMapJS,wangjun/StoryMapJS,jorol/StoryMapJS,wangjun/StoryMapJS,1modm/StoryMapJS,jorol/StoryMapJS,cr3ative/StoryMapJS,makinacorpus/StoryMapJS,jorol/StoryMapJS,miguelpaz/StoryMapJS,cr3ative/StoryMapJS,1modm/StoryMapJS,wangjun/StoryMapJS,makinacorpus/StoryMapJS,BenHeubl/StoryMapJS,1modm/StoryMapJS,miguelpaz/StoryMapJS,wangjun/StoryMapJS,miguelpaz/StoryMapJS,makinacorpus/StoryMapJS,BenHeubl/StoryMapJS,jorol/StoryMapJS,cr3ative/StoryMapJS,BenHeubl/StoryMapJS