Catching the value of a spinbox

[ronyNS]

if (ui->spinBox->value()==20){

        ui->label_2->setText("low stock");
    }

Im trying to change the text of a label when the value of spinbox is 20.
However this code does not do anything.
i tried storing the value in a variable and that also does not work .
Please help.
Thank you.

[Camilo del Real]

You must capture valueChanged(int) signal from the spinner:

//.h
private slots:
...
    void captureValue(int v);
...

//.cpp
//Constructor
<NombreClase>(){
    ...
    connect(ui->spinbox, SIGNAL(valueChanged(int)), this, SLOT(captureValue(int)));
}

void <NombreClase>::captureValue(int v)
{
    if(v < 20) ui->label_2->setText("low stock");
    else if(v >= 20 && v <= 300) ui->label_2->setText("normal stock");
    else ui->label_2->setText("high stock");
}

[ronyNS]

@Camilo-del-Real
That worked.
Thanks :)