QTreeWidget signal not working

[jpn]

// connection
connect(m_uiMainWindow.routingFlowTree, SIGNAL(itemDoubleClicked(QTreeWidgetItem*, int)), this, SLOT(onDoubleClickAddDesignItem(QTreeWidgetItem*, int)));
 
// slot
void Something::onDoubleClickAddDesignItem(QTreeWidgetItem* item, int column)
{
    QList<QTreeWidgetItem *> widgetList = m_uiMainWindow.routingFlowTree->findItems(QString("Add Design"),Qt::MatchRecursive);
 
    if (widgetList.size() > 0 && item == widgetList.takeFirst())
    {
        // do your thing
    }
}

// connection
connect(m_uiMainWindow.routingFlowTree, SIGNAL(itemDoubleClicked(QTreeWidgetItem*, int)), this, SLOT(onDoubleClickAddDesignItem(QTreeWidgetItem*, int)));

// slot
void Something::onDoubleClickAddDesignItem(QTreeWidgetItem* item, int column)
{
    QList<QTreeWidgetItem *> widgetList = m_uiMainWindow.routingFlowTree->findItems(QString("Add Design"),Qt::MatchRecursive);

    if (widgetList.size() > 0 && item == widgetList.takeFirst())
    {
        // do your thing
    }
}

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