[Zope] Accessing Subobjects of a ZClass Instance

[Nico Grubert]

I created a ZClass containing 
-Base Classes both "Object Manager" and "Catalog Aware"
-Subobjects both "Image" and "File".

In a DTML-Methode all properties of an instance are shown by:
<dtml-in "PARENTS[0].objectValues(['MyProduct'])">
<tr>
<td><dtml-var myObjNr></td>
<td><dtml-var myObjTitle></td>
....

"myObjNr" is the id of each object.

Some Objects contain a file or an image or both a file and an image.
I upload two images "beach.gif" and "water.gif" to the instance e.g.
"MyObj01".
the tag <img src="<dtml-var myObjNr>/beach.gif">
this works fine and shows me the image "beach.gif".
What I need to do that I can see all images or even better the whole
content an instance contains ?
Something like ????
syntax:
<img src="<dtml-var myObjNr>/___content of an instance______">

thanks in advance
nico