Galaxia Workflow Engine

I'm trying to import the gl_stories of the geeklog to tiki_articles.
I modified this script and all work fine but...
I can see the ranking but not the list of the articles and when click the link the page cannot be found

I import authorName, topicId, title, created, heading, body, hash, publishDate, type.
I selected ''(double quotes) value for hash but the field is empty
Any idea how to resolve the problem?