Get data Dynamically from Standard Program Structure to Work area

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field-symbols <mem>   type any .

data : ld_mem(62) type c ,

       ls_bseg type    bseg .

    ld_mem = '(SAPMF05L)BSEG'.
    assign (ld_mem) to <mem>.
    if sy-subrc = 0.
      ls_bseg = <mem>.

    endif.

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