how the values of condition type will update automatically?

Hi,

i have add a field in field catalog and write code for that on user exit

FORM USEREXIT_PRICING_PREPARE_TKOMP.

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""$"$\SE:

   move vbap-PS_PSP_PNR to tkomp-zzwbs.

ENDENHANCEMENT.

now in VA01 i can see the field but in codition type prices not coimg automatically .........i have to update it manually like select the update tab den chose condition type C then all valus are update .

plz tell me how the values of condition type will update automatically?