SAP script variable caluclation incorrect

[Former Member]

I have a SAP script and within that i have the following code written:

/:	 	IF &CHOICE& = '1'
/:	 	PERFORM GET_FINAL IN PROGRAM ZTEST
/:	 	USING     &RPBEN_DA-PERNR&
/:	 	USING     &RPBEN_DA-TCCST&:	 	
/:	 	CHANGING  &FINAL&
/:	 	ENDPERFORM

now I want to modify the value of &FINAL&... I need to some calculation and based on that I want to set the values for ex:

I want to do something like this :

/:                v_num = 2.
/:                 V_test = FINAL * V_num.

But when I debug v_test is coming out to be zero and FINAL does have a value in it. can you please tell me what I might be doing wrong here.

[Former Member]

SAPScript standard process: In your subroutine for the perform, you must read your input table of type itcsy....calculate all your values in the subroutine......

like:

form GET_FINAL tables in_par structure itcsy
                                     out_par structure itcsy.

read table in_par index 1.  
   lv_pernr = in_par-value.   "first USING
read table in_par index 2.
lv_TCCST = in_par-value.   "2nd USING value

* do your stuff.

read table out_par index 1.
  out_par-value = some_field. "first changing value FINAL
modify out_par index 1.   
read table out_par index 2.    "your VTEST becomes a changing parameter
out_par-value = your other calculations
modify out_par index 2.
endform.

Edited by: BreakPoint on Mar 14, 2011 7:11 PM