QVariant arg(metaTypes[0], null);
outputArgs.append( arg );
params[0] = const_cast<void*>(outputArgs.at( outputArgs.count() - 1 ).constData());
QVariant arg(metaTypes[0], null);
outputArgs.append( arg );
params[0] = const_cast<void*>(outputArgs.at( outputArgs.count() - 1 ).constData());