Connect HN with Logic

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Hello HN users.

I have downloaded the demo of HN.

I want to use Logic via IAC but it would not work. IAC is set up but I can't make a connection with Logic.

I have found a post on the forum of Breeze but this post is already by 2007.
I have found an article on http://compusition.com/web/articles/logic-multitrack-midi to the IAC. 
Who can help me with a step by step.
Thanks in advance.

Denis