Not able to pass environment variable through CLI using plugin(index.js)

[DebashishSamanta]

Windows 11 :

index.js:

module.exports = (on, config) => {
config.env.DB = {
user: process.env.DB_NAME
}
return config
}

CLI Passing the DB_NAME :
NPM Script :
"cy:chrome1": "cypress open"

CLI : npm run cy:chrome1 DB_NAME=test

But Environment Value is blank. Environment value passed from CLI is not getting stored for testing.