About variable thermal properties. Possibly nonlinear on the parameter coupling.

Dear OGS users,

I have a short question on the variable thermal conductivity as a function of temperature just solved at the previous iteration or time step in HEAT_TRANSPORT. Any clever way to set up not modifying the source code?

And the next small question is that is there a way to configure specific heat as a function of temperature given in a separate curve such as in .rfd? I know I can do this with fluid properties this way. I wonder if it is a way for specific heat (CAPACITY) in .msp file.

Any clue will be appreciated. Thanks.