Unable to fetch Transaction Data in sap bpc nw 10.1

Hi Every one,

I want to fetch Transaction Data in sap bpc nw 10.1 ?

so i used below logic

TRY.

CALL FUNCTION 'UJQ_RUN_RSDRI_QUERY'
EXPORTING
i_appset_id       = i_appset_id                  " Appset Id    (i am passing environment )
i_appl_id           = lv_appmodel_id            " Application  (i am passing model id)
it_dim_name     = lt_dim_name                " Dimensions (i am passing all 10 + 1 dimension names)
*it_sel            = it_sel                              " Selection Table
if_check_security = ABAP_FALSE            " to enable Security Check
IMPORTING
et_data           = <FS_DATA>.                   " Output

CATCH cx_ujq_exception.

ENDTRY.

but sy-subrc eq 0 and <FS_DATA>  is initial (no records) .

What went wrong ???