I took this script straight from the manual and tried it out. It should move my entity along either the X-axis or Y-axis but unfortunately I found that it doesn't do anything to my entity and the only thing that moves when pressing the arrowkeys is the camera.
Code:
action move_me
{
while (1)
{
my.X += 10 * KEY_FORCE.X;
my.Y += 10 * KEY_FORCE.Y;
move_view();
wait(1);
}
}