[Zope] External <-> DTML Methods

[Tom Deprez]

Hi,

Shalabh helped me a lot further, he gave me an external method which helps
me on the way, however I would like to know if it's possible to write this
in a DTML-method. If this isn't possible, then why isn't this possible? 

Here is the external method (placed in the Methods view of a class)

def manage_afterAdd(self,item,container):
    item.myparent=container.id
    return

Is it possible to write this in DTML?

Thanks in advance,

Tom.