diff --git a/virtual-patient-model/src/main/java/com/supervision/vo/manage/TreatmentPlanTreeNode.java b/virtual-patient-model/src/main/java/com/supervision/vo/manage/TreatmentPlanTreeNode.java
index b2dc2f29..0599b99b 100644
--- a/virtual-patient-model/src/main/java/com/supervision/vo/manage/TreatmentPlanTreeNode.java
+++ b/virtual-patient-model/src/main/java/com/supervision/vo/manage/TreatmentPlanTreeNode.java
@@ -47,4 +47,14 @@ public class TreatmentPlanTreeNode {
 
 
    }
+
+   public void addNode(TreatmentPlanTreeNode disposalPlanNode){
+      if (null == child){
+         child = new ArrayList<>();
+      }
+      boolean find = child.stream().anyMatch(node -> node.getName().equals(disposalPlanNode.getName()));
+      if (!find){
+         child.add(disposalPlanNode);
+      }
+   }
 }