Attached Link: http://market.renderosity.com/mod/forumpro/showthread.php?thread_id=2735605

The correct keyword is actor, rather than prop. If you use the form actor $CURRENT, the pose will apply to the currently selected item - but this only works in Poser 5 upwards.

Les Bentley's Compendium of PZ2 techniques (linked) is the bible for this sort of stuff. :-)

DAZ|Studio is more forgiving of this sort of thing, because it was developed after a lot of the community-devised techniques that we now take for granted (ERC, MAT poses etc.).