I just watched the RoboHelp video and I have a question about how each topic is uniquely identified. We need to link help topics to our UI and cannot use a URL-based identifier as our titles often change and many URL-based solutions build the URL using the topic title.
You need to use map ids. Go to the RoboHelp Tour on my site and find your version of RoboHelp. Then you can find info about map ids and calling the topics.
My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.