Meteor settings on windows

how can I do this on windows export METEOR_SETTINGS='{"privateKey":"MY_KEY", "public":{"publicKey":"MY_PUBLIC_KEY", "anotherPublicKey":"MORE_KEY"}}'? I have tried this :

SET PORT=3000&&SET MONGO_URL=mongodb://localhost:27017/MyDb&&SET ROOT_URL=http://localhost&&SET METEOR_SETTINGS={"public":{"ROLE_ATELIER_READ": "Lire donnees atelier"}} &&node "E:\keoniMeteorApp\bundle\main.js" 

PAUSE but Metoer.settings is always empty.

via sana