Optware-MyCloud install from Github script

I was not able to install the Optware .bin through the MyCloud WebUI.

I found an Entware install script:

I understand that the script accepts 2 arguments:

path_src=$1
NAS_PROG=$2

I do not understand how to choose these arguments and would appreciate an ELI5 explanation of said arguments. Any guidance / insight is always appreciated. If you have success with the script please indicate success in your reply. Thank you