Edwin wrote on May 30^th, 2012 at 8:01am:

Monday i did a small real flight (first attempt was just to see how it works so i started on the runway) and after taxiing from the gate to the runway and taking off the v1 etc stayed on 0. Did i do anything wrong? When i start my FSX and start on the runway, it works fine.

Make certain to change your cockpit view to the 2D view once to properly initialize the gauge.
If you’ve added the gauge icons to the 'Simicons' (Shift+1), you can click on ‘v1’ to initialize as well.

Also, the v-speeds will not show any value until you select flaps, 5, 15 or 25. All other flap setting (0, 2, 30 and 40) will display '0'.