Manually deleted widget from Uİ now new ones does not work

[GunkutA]

Hello, I have put a a checkbox in the UI then deleted it from UI and from header. Now I want to place a new checkbox I put it in the UI and create slot for it:

void MainWindow::on_checkBox_3_stateChanged(int arg1)
{
    if(ui->checkBox_3->isChecked()){

        qDebug()<<"Pressed.";
    }
}

It never enters to if statement. I believe I broke something up while I was trying to remove the previous checkbox. How can I fix it any suggestions?

[jsulm]

@GunkutA Looks like you're using the auto-connect feature.
Did you try to connect manually to see whether that works?
Also, did you do a complete clean rebuild?

[GunkutA]

Hello, after I manually connect it now both of them works. Thank you.