What's the correct blockflow for receiving strings with the BLE extension?

I'd like to use the "when BluetoothLE1.recievedBytes" block, but I'm not getting anything from the "stringsValue" block. In fact, it seems like the "when BluetoothLE1.recievedBytes" isn't even triggering at all.

After connecting, you have to register for strings to set up for getting strings received events.

Dear @MasterfulMatthew,
what @ABG has already said is all that you need, but in case you want an example remember the link I've posted to a previous question of yours.

In that example I send and receive strings.