Since you are dealing with fixed expressions that are shown only on condition that their name is selected from list box %Expression, you can add a fixed label to each expression just like the name provided in the list box.
On the other hand, if you only want to define the expression names in a single place (e.g. the INLINE table used to create field %Expression), you may want to experiment with FieldValue() to obtain the current label from a fixed position in field %Expression, like
=FieldValue('%Expression', 2)
But I think this is more effort than it's worth. And whenever QV decides (usually without warning) to order %Expression values in a different way, your indices will become incorrect.
Peter
