Ruby on Rails

BusinessCenter.search(:load => { :include => 'offices' }) do

    query { string '*' }

    filter :term, "offices.retail" => true

end

and its get empty array

 => #<Tire::Results::Collection:0x0000000641fa90 @response={"took"=>4, "timed_out"=>false, "_shards"=>{"total"=>5, "successful"=>5, "failed"=>0}, "hits"=>{"total"=>0, "max_score"=>nil, "hits"=>[]}}, @options={:load=>{:include=>"offices"}, :size=>10}, @time=4, @total=0, @facets=nil, @max_score=0.0, @wrapper=Tire::Results::Item>

Where I make mistake? How filtered request with attribute in has_many model (in my case its the Office)?