using QMessage problem (help)??

[saeed]

hi .
i want write App that send SMS for Symbian device .

QMessage message;
    QMessageAddressList toList;
    QMessageAddress::Type addrType(QMessageAddress::Phone);
    toList.append(QMessageAddress(addrType,  ui->numberEdit->text()));
    message.setType(QMessage::Sms);
    message.setTo(toList);
    message.setBody(ui->messageEdit->text()); 
    service->send(message);

QMessage message;
    QMessageAddressList toList;
    QMessageAddress::Type addrType(QMessageAddress::Phone);
    toList.append(QMessageAddress(addrType,  ui->numberEdit->text()));
    message.setType(QMessage::Sms);
    message.setTo(toList);
    message.setBody(ui->messageEdit->text()); 
    service->send(message);

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but when i use this code doesn't work.
where is my problem in this code ?????????

please help me for solve this problem.
tanks .