[Pharo-project] How to manipulate HandMorph's position?

Hi everybody! I'm trying to implement some Kinematic Templates<http://hci.uwaterloo.ca/sites/default/files/uist_madness_kin_templates.mov>in Pharo for a course assignment. For that, I'm trying to modify the position of the HandCursor, but trying to evaluate naive messages like: ActiveHand position: 10@10 leaves me nowhere. Is there some black magic I need to know about the HandMorph in order to manipulate it's position they way I want? Thanks! Carla.