strike the boxes

[Moh200jo]

Is there any help to strike the boxes by avatar?
Thanks

import viz
viz.go()

room=viz.add('court.ive')
room.setPosition(0,0,25)
avatar=viz.add('vcc_male.cfg')
avatar.setPosition(0,0,3)
view = viz.MainView
link = viz.link(avatar, view)
link.preTrans([0,-.5,-6])
boxes=[]
for i in [9,15,30]:
	box = viz.add('box.wrl')
	box.setPosition(0,1,i)
	box.setScale(.5,.5,.5)
	coll=box.collideBox()
	#box.enable(viz.COLLIDE_NOTIFY)
	boxes.append( box )

walk = vizact.walkTo([0,0,15])
vizact.onkeydown(' ', avatar.addAction, walk)