[Zope] Problems with dtml-tree (again)

Hi, the tag dtml-tree creates a table in HTML, but i want to put a header(Quantity) to this table. Do you know any way to do it? Example: ----+--------------------+----------- | | | Quantity | +---+--------------------+----------+ | - | Item 1 | 9 | +---+--------------------+----------+ | | - | Item 1.1 | 5 | +---+---+---+------------+----------+ | | | + | Item 1.1.1 | 4 | ----+---+---+------------+----------- Bye.