rubygems - PhpStorm SCSS file watcher: "sass not found" -

i don't it: configured scss file watcher, every time compiling starts, phpstorm throws errors:

/users/peter_goebel/.rvm/gems/ruby-1.9.3-p194/bin/scss --no-cache --update style.scss:style.css /library/ruby/site/1.8/rubygems/dependency.rb:247:in `to_specs': not find sass (>= 0) amongst [long list of gems...] (gem::loaderror)     /library/ruby/site/1.8/rubygems/dependency.rb:256:in `to_spec'     /library/ruby/site/1.8/rubygems.rb:1231:in `gem'     /users/peter_goebel/.rvm/gems/ruby-1.9.3-p194/bin/scss:18     /users/peter_goebel/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14 

what doing wrong?

a few screenshots might helpful:

ok, figured out.

i had set environment variable:

gem_path : /users/peter_goebel/.rvm/gems/ruby-1.9.3-p194