I am trying to simulate a CCHP system with CO2 as the working fluid. Now how can i change the properties of all the components in the system like compressor, turbine etc. Can i directly change them by editing the input properties of the air compressor component or turbine component. Or else shold i write a code in EES or matlab and use the call function. If i do the call function will these components take CO2 as the working fluid. Please suggest.