Making an object to appear after other object done animating

[jaylocco]

How do I make an object to appear after other object done animating.as example below;

ObjA = viz.add('oA.WRL')
ObjA.setPosition(0,0,0)
ObjA.visible( viz.OFF )

ObjB = viz.add('oB.WRL')
ObjB.setPosition(5,0,0)

PickAction = vizact.sequence(vizact.move(-1,0,0,1),vizact.spin(0,1,0,45,1))
vizact.onpick( objB, objB.runAction, PickAction )

then How do I make visible the objA (objA.visible(viz.ON)) after objB animation is done?

TQ