[Papervision3D] Collada Objects interactivity

[Fausto Sgobba (Logicweb srl)]

Hi ppl. I placed a collada object on the scene 
(http://papervision2.com/wp-content/downloads/dae/cow.dae), and after 
the event FileLoadEvent.COLLADA_MATERIALS_DONE, I try to access its 
material to make it interactive, but it says it is "null". It seems that 
this collada loads its material automatically, so i don't have to create 
one. At this point, how can I make it interactive?

Thanks... Fausto