Simple method in Form AOT

I am testing on how to bring a new field from another table into a form, using a method.

display ItemName testme2()

{

   InventTable inventTable;

   ProdCalcTrans PCT;

   ;

   return (select firstonly ItemName from inventTable

       index hint ItemIdx

       where inventTable.ItemId == PCT.Key1).ItemName;

}

There are no errors or warnings returned when compiled. Although the same query works in another method, the one above returns no values.

Any ideas why?

Thank you,