Minify doesn't seem to work

[webengine-framework]

Hi! Love multi-sass by the way, it's a great timesaver!

I'm having trouble getting the minify option to work. Here's an example of my code:
"webengine-compile": "multi-sass -w -i webengine_alpha.scss -o webengine_alpha.css --output-style compressed"

In node-sass, the output option is placed at the beginning, however in multi-sass I've tried placing the --output-syle compressed" in every possible position and I can't get it to work. I've tried: after after multi-sass, after -w, -i, -o, after the input file, and at the end.

Please help, thanks!