The advice I gave is all boiler plate, common advice for all people new to this problem, so it is more broad in its advice than your current experience level.
A comma is the punctuation symbol ',' that on my PC keyboard appears between the "m" and '.' keys.
Yes, you already split your variables.
However, it would be wise to also display your incoming data stream in its unsplit form, in case of surprises.
For example, you are using two print streams,
- Serial, and
- HC06
I see in your sketch you are indeed doing a println() in your Serial data stream, but not in your HC06 print stream.
From your symptoms (no incoming data over BlueTooth), I'm going to guess that the HC06 print stream is the one that needed the Line Feed characters to trigger END OF MESSAGE processing in the AI2 BlueTooth Client component.
Here is some more boiler plate with a BlueTooth blocks set ...
Here is an updated blocks sample illustrating these ideas ...
These blocks can be dragged directly into your Blocks Editor.