Help! Question on calling a function module

Question

Hi,everybody.
I have a problem about function module. I created a normal function module which would call itself when user double clicked some screen elements. But when I exit the function called in second time, the value of the global variants in function called in first time changed to the value in function called in second time. It seems that they shared the global variants. So is there any ease approach to recover the data to the original value?
Thanks for any help!

Answer 1

Hi Dan,
  you can use field-symbols instead.
check the following code
IM_TEST is the importing parameter
EX_TEST is the exporting parameter
FUNCTION ZTEST_RECURSION.
*"*"Local interface:
*"  IMPORTING
*"     REFERENCE(IM_TEST) TYPE  C
*"  EXPORTING
*"     REFERENCE(EX_TEST) TYPE  C
field-symbols : <var> type c.
if im_test = 1.
assign im_test to <var>.
*<var> = 4.
elseif im_test = 3.
assign im_test to <var>.
endif.
if im_test = 1.
CALL FUNCTION 'ZTEST_RECURSION'
  EXPORTING
    IM_TEST       = '3'
endif.
ex_test = <var>.
ENDFUNCTION.
i hope this will help you.
regards,
Kinshuk Saxena
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