Change node version in filewatchers

How can i change version of node in filewatcher?

I install node-sass

# npm install node-sass

And create filewatcher, but got error:

/var/www/dev.vlg-avto.ru/node_modules/node-sass/bin/node-sass style.scss style.css
/var/www/dev.vlg-avto.ru/node_modules/node-sass/lib/binding.js:15
      throw new Error(errors.missingBinary());
      ^

Error: Missing binding /var/www/dev.vlg-avto.ru/node_modules/node-sass/vendor/linux-x64-48/binding.node
Node Sass could not find a binding for your current environment: Linux 64-bit with Node.js 6.x

Found bindings for the following environments:
  - Linux 64-bit with Node.js 5.x