title: How do I Add http headers to Robot Franework script?
body: <p>I am writing a Robot Framework script and need to setup an <code>ADD</code> header and a <code>MODIFY</code> header in the robot script. 
  I am using the library <code>httplibrary.http</code> and using the keywords <code>Setup Request Header</code> within the Test Case section as below.</p>
  
  <pre><code>Set Request Header  ${HeaderName}    ${HeaderValue}
  Set Request Header  ${HeaderName1}   ${HeaderValue1}
  </code></pre>
  
  <p>I asked someone who mentioned that i need to define the variables within robot but am uncertain how to.</p>
  
  <p>I have these setup in Chrome and Firefox using the Modify headers extensions as with following values.</p>
  
  <pre><code>Add      bypassblockingtbbmicrosite              true
  Modify   X-Akamai-Edgescape                      country_code=CA
  </code></pre>