IES files DIVA grashopper

Dear DIVA community.

How can I create a custom material with a rad / ies files??

I need to create some interior lighting studies with artificial lights and I don't know what is the best way.

I added the to the folder  C:\ DIVA\daylight a rad file... but nothing appears in my custom material component menu at DIVA.

Any help would be welcome!

Cheers :D