Issue with command line cadfeko execution

Hi, I’m trying to run feko lua scripts from command line to change some variables inside cadfeko with a call from CLI.

When I run the script from the feko script editor it works fine but when I try to execute it from terminal it does not work and the message

”An error occurred while processing the command line:Loaded “FILENAME.cfx” Data could not be read from file “FILENAME.cfx” An unknown error occurred”

The command I run is : 

cadfeko “FILENAME.cfx” —run-script ChangeVar.lua

How can I fix this error?

Thanks in advance for the help.