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How do I optimize in JE+EA based on an objective which is normalized by a changing Area value?

I'm trying to optimize normalized energy loads for different geometries. The geometries are defined by input variables @@width@@ and @@length@@. The energy load is given with the result parameter c1. I then try to define a new result parameter c2 which is c1/(@@width@@*@@length@@), but JE+ does not calculate this result. How can I define a normalized energy load result parameter and then optimize it using JE+EA.

How do I optimize in JE+EA based on an objective which is normalized by a changing Area value?

I'm trying to optimize normalized energy loads for different geometries. The geometries are defined by input variables @@width@@ and @@length@@. The energy load is given with the result parameter c1. I then try to define a new result parameter c2 which is c1/(@@width@@*@@length@@), but JE+ does not calculate this result. How can I define a normalized energy load result parameter and then optimize it using JE+EA.