You could place global variables on your popover which you populate on opening the popover, à la …
Set Variable [ $$creation ; GetField ( Get ( LayoutTableName ) & "::" & yourCreationFieldName ) ]
give them object names and refresh those objects (or group them, give the group a name and refresh it).
Don't forget to delete the $$vars when you close the popover.
A different approach would be to use "evaluate" within the mouse over calculation, as long as the field names are consistent throught every table.
thanks for the hint. This works fine. Though I decided to set the Globals at the beginng of the pop-over-enter-script to "" and than populate it with possible values. If there is no access to the fields than nothing is shown. This should save the second trigger-script when closing.
they have consistent names. But I do not know how to use your approach in an certain example. Any lines for me?