SELECTION SCREEN

HI ALL,

i have one problem with the screen..

i have selection screen parameters say

p_matnr LIKE mara-matnr OBLIGATORY ,

p_charg LIKE mchb-charg OBLIGATORY,

p_werks LIKE marc-werks OBLIGATORY,

p_vbeln LIKE LIPS-vbeln 'delivery number

AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_vbeln.

PERFORM get_values.

FORM get_values .

SELECT * FROM lips CLIENT SPECIFIED INTO CORRESPONDING FIELDS OF TABLE p_it_values

WHERE mandt = sy-mandt

AND werks = p_werks

AND matnr = p_matnr

AND charg = p_charg.

here i am giving input as material and plant ,batch no( on selection screen)

here p_matnr shows space

p_charg show space

instaed of material and batch

what is the wrong pls let me knowwwwww

regards

suma