How to assign radiance materials to the surfaces of zones

Dear All,

How can I assign radiance materials to the surfaces of zones I have already defined using Mass2Zone?

With setEPZoneCnstr I can assign EPConstructions… What about radiance materials? I know that with createHBSrfs it’s possible to assign rad materials but for some reasons, I made my zones as masses and then turned them into zones (Mass2Zone)

Thank you

setRADMaterials component does it… Sorry, I guess it was a very simple question…