I’m using systemd v250.5. I want to pass EXIT_CODE & EXIT_STATUS of service when it fails.

I have followed the example provided in systemd doc – https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#Examples

A service myfailer.service which can trigger an OnFailure= dependency.

[Unit]
Description=Service which can trigger an OnFailure= dependency
OnFailure=myhandler.service

[Service]
ExecStart=/bin/myprogram
    
    

A service myhandler.service can be triggered by myfailer.service service.

[Unit]
Description=Acts on service failing or succeeding

[Service]
ExecStart=/bin/bash -c "echo $MONITOR_SERVICE_RESULT $MONITOR_EXIT_CODE $MONITOR_EXIT_STATUS $MONITOR_INVOCATION_ID $MONITOR_UNIT"

On failure, myhandler.service service gets invoked but the value for $MONITOR_SERVICE_RESULT, $MONITOR_EXIT_CODE, $MONITOR_EXIT_STATUS, $MONITOR_INVOCATION_ID, $MONITOR_UNIT are empty