CST - User Defined Dispersive Anisotropic Material Properties

Hello everyone,

Does anyone know what format I have to use to import user defined dielectric dispersion data for an anisotropic material? 
I have had success with user defined dielectric dispersion data for an isotropic material with a CVS file with four columns: frequency, real permittivity, imaginary permittivity, and weight.

For the anisotropic material, I used a CVS file with eight columns: frequency, real eps_x, imaginary eps_x, real eps_y, imaginary eps_y, real eps_z, imag eps_z, and weight. However, I get the error "Load failed. No valid entries found."

Thank you!

CST Studio Suite