Wikitude

screen capture

I'm working with the screen capture sample from the examples package and would like to modify the sharing feature once you capture the screen. In current configuration, the app allows me to share the pic with pretty much any available sharing app in my mobile; however, I would like to change this so users can upload the image to a specific server only, or at least a copy of the pic gets stored in that server. Could you please tell me where I can find the function that deals with this functionality? Thanks.