Record update windowd entered data saving

[MarkoSan]

I have an QSqlTabelModel filled with data from three sql tables. When I press in customer browser button "Insert record" or "Change record", mthe update record window show, which contain several QLineEdit widgets. How do I save entered data into database? My exact question is, how to convert every QLineEdit.text() into corespoding record field and then save it?

const int INSERT_RECORD_AT_END=-1;
 
        QSqlRecord cDataRecord;
 
        cDataRecord.setValue("SIFRA", m_pUpdateWindow->GetCustomerID()->text());
        cDataRecord.setValue("DS", m_pUpdateWindow->GetTaxNumber()->text());
        cDataRecord.setValue("PRIIMEK", m_pUpdateWindow->GetSurname()->text());
        cDataRecord.setValue("IME", m_pUpdateWindow->GetName()->text());
        //cDataRecord.setValue("ULICA", m_pUpdateWindow->GetStreetID()->text());
        cDataRecord.setValue("STEVILKA_ULICE", m_pUpdateWindow->GetStreetNumber()->text());
        cDataRecord.setValue("POSTA_STEVILKA", m_pUpdateWindow->GetZipCode()->text());
 
        if(m_pTableModel->insertRecord(INSERT_RECORD_AT_END, cDataRecord))
        {
            QSqlError error=m_pTableModel->lastError();
            if(error.type()!=QSqlError::NoError)
            {
                qDebug() << m_pTableModel->query().lastQuery();
            }   // if
        }   // if

const int INSERT_RECORD_AT_END=-1;

        QSqlRecord cDataRecord;
        
        cDataRecord.setValue("SIFRA", m_pUpdateWindow->GetCustomerID()->text());
        cDataRecord.setValue("DS", m_pUpdateWindow->GetTaxNumber()->text());
        cDataRecord.setValue("PRIIMEK", m_pUpdateWindow->GetSurname()->text());
        cDataRecord.setValue("IME", m_pUpdateWindow->GetName()->text());
        //cDataRecord.setValue("ULICA", m_pUpdateWindow->GetStreetID()->text());
        cDataRecord.setValue("STEVILKA_ULICE", m_pUpdateWindow->GetStreetNumber()->text());
        cDataRecord.setValue("POSTA_STEVILKA", m_pUpdateWindow->GetZipCode()->text());
        
        if(m_pTableModel->insertRecord(INSERT_RECORD_AT_END, cDataRecord))
        {
            QSqlError error=m_pTableModel->lastError();
            if(error.type()!=QSqlError::NoError)
            {
                qDebug() << m_pTableModel->query().lastQuery();
            }   // if
        }   // if

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Is it maybe problem in insertRecord paramaters?