diff --git a/playground/invoker/Invoker.cpp b/playground/invoker/Invoker.cpp
index 042c7c0b..b1f55c3d 100644
--- a/playground/invoker/Invoker.cpp
+++ b/playground/invoker/Invoker.cpp
@@ -13,7 +13,7 @@ Invoker::Invoker( QObject* parent ):
 void Invoker::addCallback( const QObject* object,
     const QskMetaFunction& function )
 {
-    m_callbacks += QskMetaCallback( object, function );
+    m_callbacks.append( QskMetaCallback( object, function ) );
 }
 
 void Invoker::invoke( qreal realValue, int intValue,
diff --git a/playground/invoker/main.cpp b/playground/invoker/main.cpp
index b6761ef5..fc4de90c 100644
--- a/playground/invoker/main.cpp
+++ b/playground/invoker/main.cpp
@@ -78,10 +78,13 @@ int main( int argc, char* argv[] )
     MyObject object;
     MyObject2 object2;
 
+    int num = 111;
+    auto f = [&num]( int i, double d ) { qDebug() << i << d << (++num); };
+
     Invoker invoker;
 
-    invoker.addCallback( QskMetaFunction() );
 #if 1
+    invoker.addCallback( QskMetaFunction() );
     invoker.addCallback( debugValue );
     invoker.addCallback( debugValueI );
     invoker.addCallback( &object, &MyObject::print1 );
@@ -91,8 +94,6 @@ int main( int argc, char* argv[] )
     invoker.addCallback( &object, &MyObject::print4 );
     invoker.addCallback( &object, []( double d, int i ) { qDebug() << d << i; } );
 
-    int num = 111;
-    auto f = [&num]( int i, double d ) { qDebug() << i << d << (++num); };
     invoker.addCallback( &object, f );
     invoker.addCallback( &object2, f );
     invoker.addCallback( &object, fs );
@@ -109,7 +110,7 @@ int main( int argc, char* argv[] )
     qDebug() << "== Direct Connections";
     invoker.invoke( 3.14, 35, Qt::DirectConnection );
 
-    qDebug() << "== Queued Connections";
+    qDebug() << "\n\n== Queued Connections";
 
     QTimer::singleShot( 0,
         [&invoker] { invoker.invoke( 0.07, 42, Qt::QueuedConnection ); } );
@@ -117,34 +118,6 @@ int main( int argc, char* argv[] )
 
     QTimer::singleShot( 100, &app, QCoreApplication::quit );
 
-#if 0
-    QObject::connect( &object2, &MyObject2::done,
-        &object, &MyObject::print1 );
-
-    QObject::connect( &object2, &MyObject2::done, debugValue );
-    QObject::connect( &object2, &MyObject2::done, debugValueI );
-    QObject::connect( &object2, &MyObject2::done, &object, &MyObject::print1 );
-    QObject::connect( &object2, &MyObject2::done, &object2, &MyObject2::print1 );
-    QObject::connect( &object2, &MyObject2::done, &object, &MyObject::print2 );
-    QObject::connect( &object2, &MyObject2::done, &object, &MyObject::print3 );
-    QObject::connect( &object2, &MyObject2::done, &object, &MyObject::print4 );
-    QObject::connect( &object2, &MyObject2::done, &object, []( double d, int i ) { qDebug() << d << i; } );
-    
-    int num2 = 111;
-    auto f2 = [&num2]( int i, double d ) { qDebug() << i << d << (++num2); };
-    QObject::connect( &object2, &MyObject2::done, &object, f2 );
-    QObject::connect( &object2, &MyObject2::done, &object2, f2 );
-    QObject::connect( &object2, &MyObject2::done, &object, fs );
-    QObject::connect( &object2, &MyObject2::done, &object2, fs );
-    
-    QObject::connect( &object2, &MyObject2::done, &object, []( double d ) { qDebug() << d; } );
-    QObject::connect( &object2, &MyObject2::done, []() { qDebug() << "HERE"; } );
-    QObject::connect( &object2, &MyObject2::done, []( int i, double d ) { qDebug() << i << d; } );
-    QObject::connect( &object2, &MyObject2::done, []( int i ) { qDebug() << i; } ); 
-    QObject::connect( &object2, &MyObject2::done, []( double d ) { qDebug() << d; } );
-
-#endif
-
     return app.exec();
 }
 
diff --git a/src/common/QskMetaInvokable.h b/src/common/QskMetaInvokable.h
index c6636516..0903eec5 100644
--- a/src/common/QskMetaInvokable.h
+++ b/src/common/QskMetaInvokable.h
@@ -107,7 +107,7 @@ public:
     }
 
     static void invoke( int which, QtPrivate::QSlotObjectBase*,
-        QObject* object, void** args, bool* ret )
+        QObject* object, void** args, bool* )
     {
         static Invokable* invokable = nullptr;
 
@@ -142,12 +142,6 @@ public:
 
                 break;
             }
-            case Compare:
-            {
-                const auto function = *reinterpret_cast< Function* >( args );
-                *ret = function == invokable->m_function;
-                break;
-            }
             case TypeInfo:
             {
                 *reinterpret_cast< int* >( args ) = 0; // = QskMetaFunction::Member