Volume porosity as function of temperature
 

Hi all, I tried to set volume porosity by function of temperature. But CFX don't like this idea. Error message is "Parameter 'Volume Porosity' in object '/FLOW/DOMAIN:Porous/DOMAIN MODELS/VOLUME POROSITY' has been assigned an expression that references the following unavailable variables: T" Do you know any ways to avoid this limitation? Thanks for your replies!