Hey Array ,nI tried out suggestion and created a Adjust UDF to store the values of density and viscosity along with the phase fraction of both the native method and the values calculated by my UDF function in separate files and compared them.nThe values of density are exactly the same in both cases for the same value of phase fraction, and the viscosity is almost similar but varies by around +/- 0.0005%, which is too small to make a difference I think. So I'm not sure exactly why this approach isn't working. Please suggest.n