Relative permittivity of gold

hello all,

i am working in 4.3 comsol and i have a problem with the material part, that i need to work with gold or silver in my geometry but after selecting the sub domain parts that i need it to be gold , it asks me to put the values of relative permittivity. as when i used 3.5a comsol we put the value of the relative permittivity as jcEpsReal(nu_rfw)-j*jcEpsImag(nu_rfw)
but here in 4.3 version what should i use?


Thank u so much