How to Put Negative Sign in Front? 
Use Function Module CLOI_PUT_SIGN_IN_FRONT

 Codes:
REPORT ynegativeinfront.

PARAMETERS v_amount(10) TYPE c OBLIGATORY DEFAULT '123.45-'.

WRITE:/ 'BEFORE:', v_amount.

CALL FUNCTION 'CLOI_PUT_SIGN_IN_FRONT'
  CHANGING
    value = v_amount.

WRITE:/ 'AFTER:', v_amount. 


Serkan AKKAVAK
Computer Engineer
ABAP Developer & SAP MM SD Consultant
Contact : serkurumsal@yandex.com