How to successfully instal Big Blue Button's ruby gems ?!

I tried to instal the open source web conference tool Big Blue Button in my droplet, upon Ubuntu 10.04. It is stated by their documentation that “If you are behind a HTTP Proxy, you will get an error from the package bbb-record-core.”, and the solution for that would be to manual install the gems using the following script:

#!/bin/bash

export HTTP_PROXY=“<your_http_proxy>”

gem install --http-proxy $HTTP_PROXY builder -v 2.1.2 gem install --http-proxy $HTTP_PROXY diff-lcs -v 1.1.2 gem install --http-proxy $HTTP_PROXY json -v 1.4.6 gem install --http-proxy $HTTP_PROXY term-ansicolor -v 1.0.5 gem install --http-proxy $HTTP_PROXY gherkin -v 2.2.9 gem install --http-proxy $HTTP_PROXY cucumber -v 0.9.2 gem install --http-proxy $HTTP_PROXY curb -v 0.7.15 gem install --http-proxy $HTTP_PROXY mime-types -v 1.16 gem install --http-proxy $HTTP_PROXY nokogiri -v 1.4.4 gem install --http-proxy $HTTP_PROXY open4 -v 1.3 gem install --http-proxy $HTTP_PROXY rack -v 1.2.2 gem install --http-proxy $HTTP_PROXY redis -v 2.1.1 gem install --http-proxy $HTTP_PROXY redis-namespace -v 0.10.0 gem install --http-proxy $HTTP_PROXY tilt -v 1.2.2 gem install --http-proxy $HTTP_PROXY sinatra -v 1.2.1 gem install --http-proxy $HTTP_PROXY vegas -v 0.1.8 gem install --http-proxy $HTTP_PROXY resque -v 1.15.0 gem install --http-proxy $HTTP_PROXY rspec-core -v 2.0.0 gem install --http-proxy $HTTP_PROXY rspec-expectations -v 2.0.0 gem install --http-proxy $HTTP_PROXY rspec-mocks -v 2.0.0 gem install --http-proxy $HTTP_PROXY rspec -v 2.0.0 gem install --http-proxy $HTTP_PROXY rubyzip -v 0.9.4 gem install --http-proxy $HTTP_PROXY streamio-ffmpeg -v 0.7.8 gem install --http-proxy $HTTP_PROXY trollop -v 1.16.2

I`m not being able to successfully run this script because I don’t know how to fill the “HTTP_PROXY” variable. What should I put where it says “<your_http_proxy>” ? (I’m sorry for my lack of knowledge).

Kind regards,

Sávio Lucena