logical database

Hi

I am useing logical database pnpce & make it zpnpce1 . In the selection screen code I want to do one query and pass the data in

perner ( emp code ) of selection screen .

data : pernr_rk type PA0105-pernr .

select single pernr from pa0105 into pernr_rk where

usrid = SY-UNAME and

endda = '99991231' and

subty = '0001' .

I want to pass pernr_rk data in the selection screen code

SELECT-OPTIONS: pnppernr FOR pernr-pernr

DEFAULT pernr_rk

SY-UNAME+1(8)

NO-DISPLAY

MODIF ID sel

MATCHCODE OBJECT prem

NO INTERVALS.

How could i do .

Regards

Rakesh singh