Solr Atomic update issue with multiple true fields

Solr_Atomic_update

# app/models/company.rb

class Company < ActiveRecord::Base

  searchable do
    string :locations, multiple: true, stored: true do
      ["Location1", "Location2", "Location3"]
    end
  end
end

# Using atomic_update
company = Company.last
company.atomic_update({location: ["Location4", "Location5"]})

This should update the location but it raise an error. bloe are the versions

sunspot_solr-2.2.7
sunspot_rails-2.2.7
rails-4.2.10



============= Error Stack =======
2.4.1 :029 > c.atomic_update({location: ["Location4", "Location5"]})
D, [2018-02-02T16:20:30.425951 #19586] DEBUG -- :   SOLR Request (6.2ms)  [ path=update parameters={} ]
RSolr::Error::Http: RSolr::Error::Http - 400 Bad Request
Error: {"responseHeader":{"status":400,"QTime":1},"error":{"msg":"Error parsing JSON field value. Unexpected OBJECT_START","code":400}}

URI: http://localhost:8983/solr/development/update?wt=json
Request Headers: {"Content-Type"=>"application/json"}
Request Data: "[{\"id\":\"Corporation 17\",\"type\":[\"Corporation\",\"Company\",\"ActiveRecord::Base\"],\"location_sms\":[{\"set\":\"Location4\"},{\"set\":\"Location5\"}]}]"

Backtrace: /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:196:in `rescue in execute'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:186:in `execute'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:181:in `send_and_receive'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot_rails-2.2.7/lib/sunspot/rails/solr_instrumentation.rb:16:in `block in send_and_receive_with_as_instrumentation'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications.rb:164:in `block in instrument'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications.rb:164:in `instrument'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot_rails-2.2.7/lib/sunspot/rails/solr_instrumentation.rb:15:in `send_and_receive_with_as_instrumentation'
(eval):2:in `post'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:84:in `update'
/home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:103:in `add'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:196:in `rescue in execute'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:186:in `execute'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:181:in `send_and_receive'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot_rails-2.2.7/lib/sunspot/rails/solr_instrumentation.rb:16:in `block in send_and_receive_with_as_instrumentation'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications.rb:164:in `block in instrument'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/activesupport-4.2.10/lib/active_support/notifications.rb:164:in `instrument'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot_rails-2.2.7/lib/sunspot/rails/solr_instrumentation.rb:15:in `send_and_receive_with_as_instrumentation'
	from (eval):2:in `post'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:84:in `update'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/rsolr-2.1.0/lib/rsolr/client.rb:103:in `add'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot/indexer.rb:127:in `add_documents'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot/indexer.rb:134:in `add_batch_documents'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot/indexer.rb:41:in `add_atomic_update'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot/session.rb:107:in `atomic_update'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot/session_proxy/abstract_session_proxy.rb:11:in `atomic_update'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot-2.2.7/lib/sunspot.rb:216:in `atomic_update'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/sunspot_rails-2.2.7/lib/sunspot/rails/searchable.rb:450:in `solr_atomic_update'
	from (irb):29
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/railties-4.2.10/lib/rails/commands/console.rb:110:in `start'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/railties-4.2.10/lib/rails/commands/console.rb:9:in `start'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:68:in `console'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/railties-4.2.10/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
	from /home/dilkhush/.rvm/gems/ruby-2.4.1@GF/gems/railties-4.2.10/lib/rails/commands.rb:17:in `<top (required)>'
	from bin/rails:4:in `require'
	from bin/rails:4:in `<main>'