<https://community.spotfire.com/forums/topic/8795-how-to-use-a-property-control-to-dynamically-change-only-one-column-of-my-cross-table/#comment-30274>
<http://schema.org/text>
"for the cross table It is a basic Sum([Colour]) and Sum([Type]). \nmy property control was first a column selection but then a custom expression same way I am creating for the cross table "
<https://community.spotfire.com/forums/topic/8795-how-to-use-a-property-control-to-dynamically-change-only-one-column-of-my-cross-table/>