$bfquery=
      # this is a string in single quotes so nothing is interpolated
     'query?relevance=%28names%20of%20it%2C%20ip%20addresses%20of%20it%2C%20root%20server%20of%20it%2C%20operating%20systems%20of%20it%2C%20
last%20report%20time%20of%20it%2C%20agent%20versions%20of%20it%2C%20values%20of%20results%20from%20%28BES%20Property%20%22_SupportGroup%22%29%20of%20it%29%20of%20bes%20
computers%20whose%20%28%20name%20of%20it%20as%20lowercase%20starts%20with%20%22'
      # add to this the value of this perl variable
      . $bfcomputer
      # and also this fixed string
      . '%22%29'
      # end of concatenation
;