Can you interpolate ruby variables within HAML css?

According to the HAML_REFERENCE I used this method:

- flavor = "raspberry"
#content
  :textile
    I *really* prefer _#{h flavor}_ jam.

to interpolate variables after :css

.module.modone{:class => "#{cycle("mod_#{extra.id}_")}"}

  %h3 #{extra.title}
  %p #{extra.description}
  %a.btn-default{:href => "#", :target => "_top"} enter now

:css
  .mod_#{extra.id}_ { 
    background-image: url("#{extra.image}");
    background-color: #4073DF;
  }