Yes, this is for virtual pins… and the base code is the same as reading the vPin on every other Widget.
http://docs.blynk.cc/#blynk-firmware-virtual-pins-control-blynk_writevpin
And with this segmented switch, you can go up to 5 options, so Switch Case code might work best.
https://www.arduino.cc/reference/en/language/structure/control-structure/switchcase/
BLYNK_WRITE(vPin) {
switch (param.asInt())
{
case 1: { // Item 1
// Do something
break;
}
case 2: { // Item 2
// Do something
break;
}
case 3: { // Item 3
// Do something
break;
}
case 4: { // Item 4
// Do something
break;
}
case 5: { // Item 5
// Do something
break;
}
}
}