Reply to Traktor Pro List Select mapping problem

Hi,

I am trying to map my VCI-300 with Traktor Pro so I can push up and push down on the navigator area and moves up/down the songs in list from the tree.
I have it working via using :

List Select up/down and using next and previous.

Problem I am getting is it jumps in the list every other song and not to the next song but every 2 songs..

What is wrong that I am doing?

Thanks