1 files changed, 2 insertions, 0 deletions
diff --git a/Project/Sum.h b/Project/Sum.h
index f3ab4c6..72a71a5 100644
--- a/Project/Sum.h
+++ b/Project/Sum.h
@@ -27,6 +27,8 @@ public:
     virtual void UpdatePoints();
     void AddInNode();
     void RemoveInNode();
+    
+    virtual Element* GetCopy();
 
 protected:
     std::vector<Signal> m_signalList;