How to enable thermal modification

If the user wants to use 2-way coupling between an EM tool and Icepak, how to enable thermal modification

In HFSS/3DLayout/Q3D/and SIwave, access the material library, 

Select the material, and click View/Edit Material

Enable Thermal Modifier. In other words, the user is allowing the material conductivity to change. The user can do the same thing to other properties. The thermal formula for conductivity should be edited as follows:

The formula can be modified here in accordance with the supplier's instructions. 

For copper the formula is 1/(1+0.00393 * (Temp - 20cel)

Once you have clicked OK, click OK again.