irule to divert traffic - Not Working

Hi, you have a syntax error "not equals" is not valid. Please try the following:

when HTTP_REQUEST {
  set referrer_host [URI::host [HTTP::header value Referer]]

  if { $referrer_host equals "jiratest.corp.chartercom.com"} {
    if { [string tolower [HTTP::uri]] contains "/rest/" } {
      pool JIRA-test-pool
    }
  }


  if { !($referrer_host equals "jiratest.corp.chartercom.com") } {
    if { [string tolower [HTTP::uri]] contains "/rest/" } {
      if { [string tolower [HTTP::uri]] equals "/login.jsp" }{
        pool JIRA-test-pool
        } else {
          pool JIRA-test-external-pool
        }
      }
    }

pool JIRA-test-pool

}