I want to do a parametric study on a distillation column in CHEMSEP. As input would be the feed stage. In the GUI of CHEMSEP under the CAPE-OPEN tab, i selected "show all options" and variables: "input: Feed1 stage". Close the GUI and in COFE selet ports, "add virtual information port" ïnput" and the feed stage is not available. Back in the GUI of CHEMSEP the variables have been erased.
Am i doing something wrong here?