diff --git a/src/main/bundles/prod.bundle b/src/main/bundles/prod.bundle
index d10789f..1f34d4d 100644
Binary files a/src/main/bundles/prod.bundle and b/src/main/bundles/prod.bundle differ
diff --git a/src/main/java/com/primefactorsolutions/service/CompilerService.java b/src/main/java/com/primefactorsolutions/service/CompilerService.java
index f1440cd..43b8608 100644
--- a/src/main/java/com/primefactorsolutions/service/CompilerService.java
+++ b/src/main/java/com/primefactorsolutions/service/CompilerService.java
@@ -1,6 +1,5 @@
 package com.primefactorsolutions.service;
 
-import com.primefactorsolutions.service.compiler.InMemoryClass;
 import com.primefactorsolutions.service.compiler.InMemoryFileManager;
 import com.primefactorsolutions.service.compiler.JavaSourceFromString;
 import lombok.SneakyThrows;
@@ -11,6 +10,7 @@ import javax.tools.DiagnosticCollector;
 import javax.tools.JavaCompiler;
 import javax.tools.JavaFileObject;
 import javax.tools.ToolProvider;
+import java.lang.reflect.Method;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -44,8 +44,15 @@ public class CompilerService {
         } else {
             final ClassLoader classLoader = manager.getClassLoader(null);
             final Class<?> clazz = classLoader.loadClass(qualifiedClassName);
-            final InMemoryClass instanceOfClass = (InMemoryClass) clazz.newInstance();
-            final Map<String, Boolean> results = instanceOfClass.runCode();
+            Map<String, Boolean> results = Map.of();
+
+            Method[] methods = clazz.getMethods();
+            for (Method m : methods) {
+                if ("run".equals(m.getName())) {
+                    results = (Map<String, Boolean>) m.invoke(null, new Object[] {});
+                    break;
+                }
+            }
 
             return Optional.of(results.entrySet().stream()
                     .map(e -> String.format("%-50s ... %4s", e.getKey(), RESULT_MESSAGE.get(e.getValue())))
diff --git a/src/main/java/com/primefactorsolutions/views/EvaluationView.java b/src/main/java/com/primefactorsolutions/views/EvaluationView.java
index 401d9dc..219a893 100644
--- a/src/main/java/com/primefactorsolutions/views/EvaluationView.java
+++ b/src/main/java/com/primefactorsolutions/views/EvaluationView.java
@@ -301,13 +301,12 @@ public class EvaluationView extends Main implements HasUrlParameter<String> {
         questionEditor.setSofttabs(true);
         questionEditor.setTabSize(4);
         questionEditor.setWrap(true);
-        questionEditor.setMinlines(20);
-        questionEditor.setMaxlines(30);
-        // aceEditor.setPlaceholder("... Edit ...");
-        questionEditor.setAutoComplete(true);
-        questionEditor.setCustomAutoCompletion(new String[] { "TEST", "TEST2", "TEST3" });
+        questionEditor.setMinlines(60);
+        questionEditor.setMaxlines(80);
+        questionEditor.setAutoComplete(false);
         questionEditor.setHighlightActiveLine(true);
         questionEditor.setHighlightSelectedWord(false);
+
         return questionEditor;
     }
 
diff --git a/src/main/resources/questions/fibonaci.java.txt b/src/main/resources/questions/fibonaci.java.txt
index 037876c..9b91c46 100644
--- a/src/main/resources/questions/fibonaci.java.txt
+++ b/src/main/resources/questions/fibonaci.java.txt
@@ -1,11 +1,10 @@
 package com.primefactorsolutions;
 
-import com.primefactorsolutions.service.compiler.InMemoryClass;
 import java.util.*;
 import java.lang.reflect.*;
 import java.util.stream.Collectors;
 
-public class TestClass implements InMemoryClass {
+public class TestClass {
 
     // ------------ IMPLEMENTAR AQUI  --------------------------------
 
@@ -37,8 +36,7 @@ public class TestClass implements InMemoryClass {
         }
     }
 
-    @Override
-    public Map<String, Boolean> runCode() {
+    public static Map<String, Boolean> run() {
         Map<String, Boolean> results = Arrays.stream(Tests.class.getDeclaredMethods())
                         .map(m -> {
                             try {
diff --git a/src/main/resources/questions/foobar.java.txt b/src/main/resources/questions/foobar.java.txt
new file mode 100644
index 0000000..cd1e81d
--- /dev/null
+++ b/src/main/resources/questions/foobar.java.txt
@@ -0,0 +1,46 @@
+package com.primefactorsolutions;
+
+import java.util.*;
+import java.lang.reflect.*;
+import java.util.stream.Collectors;
+
+public class TestClass {
+
+    // ------------ IMPLEMENTAR AQUI  --------------------------------
+
+    public static String getFooBar(int N) {
+        return "TODO";
+    }
+
+
+    // ------------- NO MODIFICAR DESDE ESTA LINEA --------------------
+
+    public static class Tests {
+        public static Map.Entry<String, Boolean> testNInvalido() {
+            boolean result = getFooBar(-1).equals("");
+
+            return Map.entry("N invalido retorna vacio", result);
+        }
+
+        public static Map.Entry<String, Boolean> testNValido() {
+            boolean result = getFooBar(7).equals("1,Foo,Bar,Foo,5,FooBar,7");
+
+            return Map.entry("N valido correcto", result);
+        }
+    }
+
+    public static Map<String, Boolean> run() {
+        Map<String, Boolean> results = Arrays.stream(Tests.class.getDeclaredMethods())
+                        .map(m -> {
+                            try {
+                                return (Map.Entry<String, Boolean>) m.invoke(null);
+                            } catch (IllegalAccessException e) {
+                                throw new RuntimeException(e);
+                            } catch (InvocationTargetException e) {
+                                throw new RuntimeException(e);
+                            }
+                        }).collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue()));
+
+        return results;
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/questions/palindroma.java.txt b/src/main/resources/questions/palindroma.java.txt
index b1462d1..601c837 100644
--- a/src/main/resources/questions/palindroma.java.txt
+++ b/src/main/resources/questions/palindroma.java.txt
@@ -1,11 +1,10 @@
 package com.primefactorsolutions;
 
-import com.primefactorsolutions.service.compiler.InMemoryClass;
 import java.util.*;
 import java.lang.reflect.*;
 import java.util.stream.Collectors;
 
-public class TestClass implements InMemoryClass {
+public class TestClass {
 
     // ------------ IMPLEMENTAR AQUI  --------------------------------
 
@@ -30,9 +29,15 @@ public class TestClass implements InMemoryClass {
         }
 
         public static Map.Entry<String, Boolean> testPalindromaUnico() {
-            boolean result = getPalindroma("z").equals("ZZ");
+            boolean result = getPalindroma("z").equals("Z");
 
-            return Map.entry("palindrome una solo caracter es valido", result);
+            return Map.entry("palindrome un solo caracter es valido", result);
+        }
+
+        public static Map.Entry<String, Boolean> testPalindromaUnico() {
+            boolean result = getPalindroma("abba").equals("ABBA");
+
+            return Map.entry("palindrome un solo caracter es valido", result);
         }
 
         public static Map.Entry<String, Boolean> testPalindromaNull() {
@@ -42,8 +47,7 @@ public class TestClass implements InMemoryClass {
         }
     }
 
-    @Override
-    public Map<String, Boolean> runCode() {
+    public static Map<String, Boolean> run() {
         Map<String, Boolean> results = Arrays.stream(Tests.class.getDeclaredMethods())
                         .map(m -> {
                             try {