tag plug-in

mytag.h:

class MyTag : public TagData{
     public: 
               ...//ellipsis  virtual  func
               Int GetValue();
     private:
               Int  a = 123;

};

mytag.cpp:

Int MyTag::GetValue(){
     return this->a ;
}

my object plugin code:

#include "mytag.h"
...
...ellipsis
....
Bool MyObject::Message(GeListNode * node, Int32 type, void * data){
          DescriptionCommand* dc = (DescriptionCommand*)data;
          const Int32 id = dc->_descId[0].id;
	  switch (id)
	   {
		case GET_BUTTON:
		{	
                     BaseObject* bc = (baseobject*)node;
                     BaseTag* tag = bc->GetFirstTag();
                     Int b = ( (MyTag*)tag )->GetValue();
                     GePrint( maxon::ToString(b,false) );
                     break;
                }
            }
            return true;
}