Sql problem - parameter mismatch count

Hi everyone,

i'm trying to execute sql command, but everytime i get an error "Parameter count mismatch".
Looking other examples i think that sql syntax is ok. Maybe i'm wrong, that's why i'm asking your help :)
Please, can someone tell what is wrong with code?

This is the code:

Code:

QSqlQuery query;    
    QString strQ = "INSERT INTO item(dict_id, word, prefix, translated, audioPath, example, pronunciation, wordtype, synonyms) VALUES(?,?,?,?,NULL,?,?,?,?)";
    qDebug() <<"PREPARE: " << query.prepare(strQ);
    query.bindValue(0, QVariant(_dictID));
    query.bindValue(1, QVariant(word));
    query.bindValue(2, QVariant(clan));
    query.bindValue(3, QVariant(translated));
    query.bindValue(4, QVariant(example));
    query.bindValue(5, QVariant(pronun));
    query.bindValue(6, QVariant(wordType));
    query.bindValue(7, QVariant(synonym));
    if(query.exec(strQ))
    {
        qDebug() << "Query exec YES";
        MyMessageBox mb;
        mb.setStyleSheet("background-color:white; color:black;");
        mb.setText("A new word is added: " + word);
        mb.setIconPixmap(QPixmap(":111.png"));
        mb.setStandardButtons(QMessageBox::Ok);
        mb.setAutoClose(true);
        mb.setTimeOut(2);
        mb.exec();
    }
    else
    {
        QMessageBox::warning(this, "Adding of word ", "A new word is not added",QMessageBox::Ok);
        qDebug()<<query.lastError().text() << query.boundValues().count();
    }

And this is output:

PREPARE: true
" Parameter count mismatch" 0

Thx a lot for any suggestion ;):)