issue on passing variables when Linux execution of PAI
i run a linux Ubuntu 20.04 VM and have a fresh install of PAI as described in wiki.
I made the appropriate configuration to /etc/pai/pai.conf and manually execute ./run.sh

So far so good , PAI starts succesfully , connected to IP module and trying to retrieve data from Panel.
I need to experiment with PC Password variable. 

Trying to execute PASSWORD='1213' ./run.sh   i dont see any change as PAI load Password value from /etc/pai/pai,conf.
I experimented with other variables like connection type ot logging level and seems that variables are ignored and retrieved explicity from /etc/pai/pai.conf.

see below an obvious example of connection type= serial and PAI starting with connection to IP

root@ubuntu2004:/home/ubuntu/pai# CONNECTION_TYPE='Serial' ./run.sh     
Attempting to load configuration from /etc/pai/pai.conf
2022-07-14 10:25:40,249 - INFO     - PAI - Starting Paradox Alarm Interface 3.1.0-dev
2022-07-14 10:25:40,249 - INFO     - PAI - Config loaded from /etc/pai/pai.conf
2022-07-14 10:25:40,249 - INFO     - PAI - Console Log level set to 20
2022-07-14 10:25:40,250 - INFO     - PAI - Starting...
2022-07-14 10:25:40,250 - INFO     - PAI.paradox.paradox - Connecting to interface
2022-07-14 10:25:40,250 - INFO     - PAI.paradox.paradox - Using IP Connection