this script returns a single value filed and I need it to display a multi field list. Please help!!

a  =  TZ2WOD_Work_Order_Details  [ID = input.Select];

zz = aa.TZ2WODe_Group_ID;

bb  =  TZ2WOD_Work_Order_Details  [TZ2WODe_Group_ID = zz];

input.Line_Item_Display = bb.Group_Name;

Cheers, 

Larry