How to connect the signal valueChanged from QLineEdit to a custom slot in Qt

I need to connect the valueChanged signal from QLineEdit to a custom slot programatically. I know how to do the connection by using Qt Designer and doing the connection with graphical interface but I would like to do it programmatically so I can learn more about the Signals and Slots.

This is what I have that doesn't work.

.cpp file

// constructor
connect(myLineEdit, SIGNAL(valueChanged(static QString)), this, SLOT(customSlot()));

void MainWindow::customSlot()
{
    qDebug()<< "Calling Slot";
}

.h file

private slots:
    void customSlot();

What am I missing here?

Thanks