Hide headings when no row in table

Question

I am trying to create a report using LiveCycle/Acrobat, i.e. the form is created as a dynamic pdf in livecycle. I will open it with acrobat and import data.
To simplify the report, it has two columns
Client    Date Seen
Not all clients have ever been seen, and I would like the report to look something like:
Joe Blow    Date seen
                 may 5
                 june 16
Mary Smith Date seen
                  july 23
John Smith
Fred Jones   Date seen
                  jan 14
The important point there is that for John Smith, who has no instances of being seen, I want to make the header (Date seen) invisible.
If it was a form into which someone was entering data, I would do something like (on the Exit event):
if (Date.rawValue == null)
{parent.parent.HeaderRow.presence = "invisible"}
else {parent.parent.HeaderRow.presence = "visible"}
but when I import XML data I don't think there is an "event".
I suspect what I have to do is insert a script object, and I think it needs to be called somehow after the "Import Data", and I suspect it needs to loop through all the nodes and work out which instances of the HeaderRow should be invisible, and which invisible, but I'd appreciate some guidance.
Thanks,
Jon

Answer 1

Thanks. That looks like the right event - it occurs once on opening the form and agin when you import the data. Just need to figure out the looping and presence-setting now.