[#IF [#COMPAREV mboxid mailbox] |THEN|
    #SET rec_count [#COMPUTE rec_count + 1]
     [#IF interchangeid '=' "EDI" |THEN|
         #SET edi_count [#COMPUTE edi_count + 1]
     |ELSE|
        [#IF interchangeid '=' "ENC" |THEN|
          #SET enc_count [#COMPUTE enc_count + 1]
        ]
     ]
 ]

 [#IF [#EMPTYV nextline] |THEN|
    [#IF rec_count > 1 AND edi_count = enc_count |THEN|
          #SET rec_count [#COMPUTE [rec_count] / 2]
    ]