OR, this one will use less Code Space on each use of the TRANSMIT macro.
Code:
Data  VAR  WORD
Temp  VAR  WORD

TX_Code:
    HSEROUT [Temp / 100, Temp // 100]
RETURN

ASM
TRANSMIT  macro Variable
    MOVE?WW  Variable, _Temp    
    L?CALL   _TX_Code
  endm
ENDASM

@ TRANSMIT _Data