piston.asmt file is running correctly

MbDCode/BasicUserFunction.h

@@ -5,12 +5,18 @@
 #include "UserFunction.h"
 
 namespace MbD {
+    class Units;
+
     class BasicUserFunction : public UserFunction
     {
         //funcText myUnit units 
     public:
+        BasicUserFunction(const std::string& expression, double myUnt);
+        void initialize();
+            
         std::string funcText;
         double myUnit;
+        std::shared_ptr<Units> units;
     };
 }