[TYPO3] Wrap each element in TV

[Sune]

Hi

I have the following in my TS for a FC:

 10= RECORDS
 10.source.current=1
 10.tables = tt_content
 10.wrap = <parent>|</parent>

This works perfectly! But now i want to wrap each element in  "<child>" and
"</child>", so i get

<parent>
  <child>[normal rendering of tt_content]</child>
  <child>[normal rendering of tt_content]</child>
...
  <child>[normal rendering of tt_content]</child>
</parent>

But i cant get it to work. I have tried:

 10= RECORDS
 10.source.current=1
 10.tables = tt_content
10.conf.tt_content = COA
10.conf.tt_content.wrap = <child>|</child>

but then the normal rendering dosent happen and i just get
<child></child>
<child></child>
...
<child></child>

Please help :)

BestRegards
Sune