Answer Posted / saifur rahaman

please note if i am not wrong.

how can you expect the system to modify an interanl table
without we write a code which is given by the ABAP Key
words.

please use modify statement.
and i think even if you use field symbols then also the FS
will not modify your internal table.

may subroutines if you pass the value by reference and the
form gets executed till the end , you may modify the values.

hope this will serve your purpose.

and then also if ur rigid to use modify statement then
Use Field Symbols

Something like this

DATA : itab TYPE TABLE OF string,
wa TYPE string.

FIELD-SYMBOLS : <wa> TYPE string.

wa = 'ABC'.
APPEND wa TO itab.
wa = 'ABC'.
APPEND wa TO itab.
wa = 'ABC'.
APPEND wa TO itab.

LOOP AT itab ASSIGNING <wa>.

<wa> = 'DEF'.

ENDLOOP.

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