Make code more dynamic

Hi guys,
My questions is about my code
I have this:
DATA: MOVI(4) TYPE C,
      DATOS(11) TYPE C.
TYPES: BEGIN OF S_DATOS,
          R01(7) TYPE C,
          R30(5) TYPE N,
         R22 TYPE I,
      END OF S_DATOS.
DATA: T_DATOS TYPE STANDARD TABLE OF S_DATOS WITH HEADER LINE,
            myinto type info.
FIELD-SYMBOLS: <FIELD> TYPE ANY.
call 'ZMYFUNCTION' exporting
                                             mov = 'ACUM'
                                importing
                                             info = t_datos-r01.
call 'ZMYFUNCTION' exporting
                                             mov = 'DIC'
                                importing
                                             info = t_datos-r30.
call 'ZMYFUNCTION' exporting
                                             mov = 'FOR'
                                importing
                                             info = t_datos-r22.
I think that I can change this code for something like:
DO 3 TIMES.
       CASE SY-INDEX.
           WHEN '1'.
             MOVI = 'ACUM'.
             datos = 'R01'.
          WHEN '2'.
            MOVI = 'DIC'.
            datos = 'R30'.
         WHEN '3'.
            MOVI = 'FOR'.
            DATOS = 'R22'.
       ENDCASE.
call 'ZMYFUNCTION' exporting
                                             mov = MOVI
                                importing
                                             info = MYINFO.
ASSIGN COMPONENT DATOS OF STRUCTURE T_DATOS TO <FIELD>.
<FIELD> = MYINFO. " THIS IS WRONG.
ENDDO.
How can I do this more dinamic?.
Thanks for your help .

But try this syntax for assign, introduce brackets as below:
ASSIGN COMPONENT (DATOS) OF STRUCTURE T_DATOS TO <FIELD>.
regards,
Advait

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