select-option not showing values

I created a new table - ZCUSTPROFILE.

I assigned a select-option on the ZCUSTPROFILE-CUSTID.

I do not get values when I click that select-option box. Isn't it I am suppose to get a pop-up window where I can choose values for the CUST ID box? That CUSTID column has records I am sure. Pls see image below.

<b>

Im a newbie. Pls help. Thanks. </b>

see" target="_blank">http://i150.photobucket.com/albums/s116/painkiller2007/23drt56g543g67hr/no_value.jpg">see image

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tables: ZCUSTPROFILE, SPFLI.

selection-screen begin of screen 100 as window title TEXT-100.
  selection-screen begin of block BLK_CUSTPROFILE
  with frame title TEXT-200.
      parameters: VAR1(10) type C. 
      select-options CONNID1 for SPFLI-CONNID.
      select-options CUSTID for ZCUSTPROFILE-CUSTID.

  selection-screen end of block BLK_CUSTPROFILE.
selection-screen end of screen 100.

start-of-selection.
  call selection-screen 100.