Fixed the buggy property setters in cmake, they actually caused some trouble.
Fixed the buggy property setters in cmake, they actually caused some trouble.

CoolProp/CoolProp,dcprojects/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,DANA-Laboratory/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,JonWel/CoolProp,dcprojects/CoolProp,JonWel/CoolProp,CoolProp/CoolProp,dcprojects/CoolProp,henningjp/CoolProp,dcprojects/CoolProp,henningjp/CoolProp,JonWel/CoolProp,JonWel/CoolProp,dcprojects/CoolProp,DANA-Laboratory/CoolProp,DANA-Laboratory/CoolProp,dcprojects/CoolProp,DANA-Laboratory/CoolProp,JonWel/CoolProp,DANA-Laboratory/CoolProp,DANA-Laboratory/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,dcprojects/CoolProp,JonWel/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,DANA-Laboratory/CoolProp,JonWel/CoolProp