diff --git a/example/example-build/jni/cpp/src/NormalClass.cpp b/example/example-build/jni/cpp/src/NormalClass.cpp
index 1f16bbb4..b9059e7f 100644
--- a/example/example-build/jni/cpp/src/NormalClass.cpp
+++ b/example/example-build/jni/cpp/src/NormalClass.cpp
@@ -2,5 +2,5 @@
 
 int NormalClass::addIntValue(int a, int b)
 {
-    return a + b;
+    return (a + b) * hiddenInt * hiddenParentInt;
 }
\ No newline at end of file
diff --git a/example/example-build/jni/cpp/src/NormalClass.h b/example/example-build/jni/cpp/src/NormalClass.h
index 77cac094..6a697031 100644
--- a/example/example-build/jni/cpp/src/NormalClass.h
+++ b/example/example-build/jni/cpp/src/NormalClass.h
@@ -1,8 +1,11 @@
+#include "ParentClass.h"
+
 #ifndef NORMALCLASS_H
 #define NORMALCLASS_H
 
-class NormalClass
+class NormalClass : public ParentClass
 {
+    int hiddenInt = 1;
 public:
     int addIntValue(int a, int b);
 };
diff --git a/example/example-build/jni/cpp/src/ParentClass.cpp b/example/example-build/jni/cpp/src/ParentClass.cpp
index 67af60e4..c2ff8290 100644
--- a/example/example-build/jni/cpp/src/ParentClass.cpp
+++ b/example/example-build/jni/cpp/src/ParentClass.cpp
@@ -2,10 +2,10 @@
 
 float ParentClass::addFloatValue(float a, float b)
 {
-    return a + b;
+    return (a + b) * hiddenParentInt;
 }
 
 bool ParentClass::invertBoolean(bool value)
 {
-    return !value;
+    return !(bool)(value * hiddenParentInt);
 }
\ No newline at end of file
diff --git a/example/example-build/jni/cpp/src/ParentClass.h b/example/example-build/jni/cpp/src/ParentClass.h
index d183c1cb..614d4907 100644
--- a/example/example-build/jni/cpp/src/ParentClass.h
+++ b/example/example-build/jni/cpp/src/ParentClass.h
@@ -3,6 +3,8 @@
 
 class ParentClass
 {
+protected:
+    int hiddenParentInt = 1;
 public:
     float addFloatValue(float a, float b);
     bool invertBoolean(bool value);
diff --git a/example/example-build/src/main/java/com/github/xpenatan/jparser/example/Main.java b/example/example-build/src/main/java/com/github/xpenatan/jparser/example/Main.java
index 65a00210..48966660 100644
--- a/example/example-build/src/main/java/com/github/xpenatan/jparser/example/Main.java
+++ b/example/example-build/src/main/java/com/github/xpenatan/jparser/example/Main.java
@@ -45,6 +45,7 @@ private static void generateCPP() throws Exception {
         CppCodeParser idlParser = new CppCodeParser(cppGenerator, idlReader, basePackage);
         idlParser.generateClass = true;
         JParser.generate(idlParser, baseJavaDir, genDir);
+        CPPBuildHelper.DEBUG_BUILD = true;
         CPPBuildHelper.build(libName, jniBuildPath, libsDir);
     }
 }