1 files changed, 1 insertions, 1 deletions
diff --git a/node/numbernode.h b/node/numbernode.h
index 0632696..ee822f0 100644
--- a/node/numbernode.h
+++ b/node/numbernode.h
@@ -10,7 +10,7 @@ public:
     NumberNode();
     void run(ExecutionNode* previous);
     void setNumber(qint64);
-
+virtual QString toString()const;
 private:
     qint64 m_number;
     ScalarResult* m_scalarResult;