Here are some examples in blocks for you, starting with the simplest case and working on upwards in complexity:
Here is a simple BlueTooth text receiver sample, for single value per line:

You pretty much have that already, but you will need to capture into a message variable before you can get to the next level, multiple readings per message:
Here is an updated blocks sample illustrating these ideas ...
P.S. These blocks can be dragged directly into your Blocks Editor workspace.

In your case, you would need 4 Labels, for x,y,z,power results, and
you would need to print 4 values separated by commas ending with a println() to send the message.
Do you plan on graphing the values in the app?
I have another sample for that.







