PLD -Purchase Order

Hi,

Can anyone tell me if it is possible to display a field in PLD (Purchase Order),

if UDF Group Value is 0 then print , UNIT Field in X

if UDF Group Value is 1 then print , UNIT Field in Y

if UDF Group Value is 2 then print, UNIT Field in Z

Pls tell me..

Thanks & Regards

Payal..