Signal slot don't work

[cpuinthebrain]

I have no idea why signal slot don't work.There is no error at all:


customers.h

signals:
    void setFlagUp();

signals:
    void setFlagUp();

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customers.cpp

void Customers::on_pushButtonCustomersDialogAdd_clicked()
{
    emit setFlagUp();
    this->close();
}

void Customers::on_pushButtonCustomersDialogAdd_clicked()
{
    emit setFlagUp();
    this->close();
}

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mainwindow.h

private slots:
void setIsRecordSet();

private slots:
void setIsRecordSet();

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mainwindow.cpp

Customers *cu = new Customers(this);
connect(cu, SIGNAL(setFlagUp()),this, SLOT(setIsRecordSet()));
 
void MainWindow::setIsRecordSet(){
 
    qDebug() << "WORKS";
}

Customers *cu = new Customers(this);
connect(cu, SIGNAL(setFlagUp()),this, SLOT(setIsRecordSet()));

void MainWindow::setIsRecordSet(){

    qDebug() << "WORKS";
}

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