HR Program data extraction based on selection screen

Hi All,

I want to get the data based on the selection screen values. and i am using the PNP Logical data base in that and below is my selection screen values,

INFOTYPES :0001,0002,0008.

SELECT-OPTIONS: s_btrtl FOR pa0001-btrtl NO INTERVALS,

s_trfgr FOR pa0008-trfgr NO INTERVALS,

s_trfgb FOR pa0008-trfgb NO INTERVALS,

s_awart FOR pa2001-awart NO INTERVALS.

PARAMETERS : p_begda LIKE sy-datum DEFAULT sy-datum,

p_endda LIKE sy-datum DEFAULT sy-datum.

using get pernr i am gettin the values

************************************************************************

START-OF-SELECTION.

************************************************************************

GET pernr.

PERFORM get_data_001.

END-OF-SELECTION.

&----

---

*& Form get_data_001

&----

---

FORM get_data_001 .

rp_provide_from_last p0008 space pn-begda pn-endda.

rp_provide_from_last p0001 space pn-begda pn-endda.

rp_provide_from_last p2001 space pn-begda pn-endda .

How to get the values based on the selection screen values ie) S_BTRTL,S_TRFGR,S_TRFGB,S_AWART,P_BEGDA,P_ENDDA.

Pls give me a solution to get the datas based on the selection screen.

Thanks,

With Regards,

Deesanth