Download mittels FuBa 'GUI_DOWNLOAD'

Download mittels FuBa 'GUI_DOWNLOAD'

Hallo,

ich möchte eine interne Tabelle downloaden

aufbau:
20
A_PAL_KZL 21
A_PAL_NZL 4
E_WEZONE 4
U_IUZ_IUR 1

rausbekomme ich aber nur:

A_PAL_KZL :
A_PAL_NZL ?I
E_WEZONE sc
U_IUZ_IUR

hier das Coding:
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
* BIN_FILESIZE =
FILENAME = 'c:\test.ASC'
FILETYPE = 'ASC'
WRITE_FIELD_SEPARATOR = 'X'
* IMPORTING
* FILELENGTH =
TABLES
DATA_TAB = tab
* EXCEPTIONS
* FILE_WRITE_ERROR = 1
* NO_BATCH = 2
* GUI_REFUSE_FILETRANSFER = 3
* INVALID_TYPE = 4
* OTHERS = 5
.
IF SY-SUBRC <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.


Was mache ich falsch?