Not possible to add material to Vray fur

[Val the Sinarb]

Hi, I have been trying to add Vray fur to my project in Rhino, but I do not have the possibility to add material.
I enable the material possibility, but in the roll out menu I have only "None".
Any idea why is that, please?
Thank you!

EDIT:
Ok, solved, I did not have any vray material loaded into the scene, my bad : )
Can I delete this post somehow? : )