diff --git a/Hydroplane/src/main/java/org/example/Form4GenericDopClass.java b/Hydroplane/src/main/java/org/example/Form4GenericDopClass.java
index 51ec9f0..1bb3a7a 100644
--- a/Hydroplane/src/main/java/org/example/Form4GenericDopClass.java
+++ b/Hydroplane/src/main/java/org/example/Form4GenericDopClass.java
@@ -37,12 +37,12 @@ public class Form4GenericDopClass extends JFrame {
         canv.setBounds(0,0,pictureBoxWidth, pictureBoxHeight);
 
         genericDopClass = new GenericDopClass<>(100, 100, pictureBoxWidth, pictureBoxHeight);
-        genericDopClass.addPlane(new EntityPlane(100, 100, Color.BLUE, 30));
-        genericDopClass.addPlane(new EntityPlane(100, 100, Color.RED, 10));
-        genericDopClass.addPlane(new EntityPlane(100, 100, Color.GRAY, 20));
-        genericDopClass.addPlane(new EntityHydroplane(100, 100, Color.BLUE, Color.ORANGE, true, true, 20));
-        genericDopClass.addWindow(new WindowDrawing());
-        genericDopClass.addWindow(new WindowDrawingTringle());
+        genericDopClass.Add(new EntityPlane(100, 100, Color.BLUE, 30));
+        genericDopClass.Add(new EntityPlane(100, 100, Color.RED, 10));
+        genericDopClass.Add(new EntityPlane(100, 100, Color.GRAY, 20));
+        genericDopClass.Add(new EntityHydroplane(100, 100, Color.BLUE, Color.ORANGE, true, true, 20));
+        genericDopClass.Add(new WindowDrawing());
+        genericDopClass.Add(new WindowDrawingTringle());
 
         JButton creatButton = new JButton("createButton");
         creatButton.addActionListener(
diff --git a/Hydroplane/src/main/java/org/example/GenericDopClass.java b/Hydroplane/src/main/java/org/example/GenericDopClass.java
index ca60588..e95db0e 100644
--- a/Hydroplane/src/main/java/org/example/GenericDopClass.java
+++ b/Hydroplane/src/main/java/org/example/GenericDopClass.java
@@ -28,22 +28,20 @@ public class GenericDopClass<T extends EntityPlane, U extends IWindowDrawing> {
         random = new Random();
     }
 
-    public boolean addPlane(T plane){
+    public void Add(T plane){
         if (plane == null)
-            return false;
+            return;
         if (countPlanes > maxCountPlanes)
-            return false;
+            return;
         Planes.add(countPlanes++, plane);
-        return true;
     }
 
-    public boolean addWindow(U window){
+    public void Add(U window){
         if (window == null)
-            return false;
+            return;
         if (countWindows > maxCountWindows)
-            return false;
+            return;
         Windows.add(countWindows++, window);
-        return true;
     }
 
     public DrawingPlane getRDrawingObject(){