Dear FreeSurfers

I use the command: <tkmedit-sess -s vpnXY -aparc+aseg -analysis ampmod -c AmvsSIN> and want to mark a point at special Talairach coordinates at this brain. When I type in the coordinates e.g. -46 -19 8 and press RETURN the the Numbers change to e.g. -46 -92 15. I dont found a possibility to mark the talairach coordinates I want. Can you help me? Thanks!

Iris