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thans for your reply.i think i get it .yes,i make a unit operation in Chinese that can be used in the Aspen Plus . The material Object is not writed by me,i quote part of the eg.CPP MIxer.And The most program (material Object) is wtited by my Brother (we have a same teacher) .The fuction "Cacul...

Hello jasper Recently,I am very interested in COM programming,so i tried to use Aspen's Property package and my program to simulate pump.When it comes to " pump's allow installation height",I feel helpless.As you konw,i need to call the inlet material's vaporPressure, i think the function ...