Bapi G/L posting problem

Hi experts,

am using the bapi BAPI_ACC_DOCUMENT_POST for posting GL for t-code f-02. In this bapi

CALL FUNCTION 'BAPI_ACC_DOCUMENT_POST'
    EXPORTING
      documentheader    = lw_header
    TABLES
      accountgl         = lt_items
*      accountreceivable = lt_acct_rec
*      accountpayable    = lt_acct_pay
      accounttax     = lt_acct_tax
      currencyamount    = lt_amount
      return            = lt_return.

in the currency amount i need to pass DMBTR and WRBTR but in bapi bapiaccr09 there is only amt_doccur which is WRBTR how to pass DMBTR. PLZ HELP ME.

regards

sunita