Error in Example Code (?)

[joecupano]

Thank you for the wonderful library.

For some reason when I run the example code ensuring the library is in the
same directory I get the following error

Traceback (most recent call last):
File "./rf95_testing.py", line 17, in
lora.set_modem_config(Bw31_25Cr48Sf512)
NameError: name 'Bw31_25Cr48Sf512' is not defined