[Zope] dtml-tree recursion

[nuno]

Hi there !
I trying to work with dtml-tree tag to show my site contents.
I have a dtml-method that does that.
Still, the calling Dtml Document passes to the method that shows the tree, a
variable (kind of a parameter) that i need to access in the method.

All goes OK : )
both the tree and the variable are displayed !

The problem is when i click the +/- icon
Zope gives me an error that couldn't access the variable passed as argument.
I think that it might be a problem with recursion of the tree.

does anyone have an ideia how to solve this recursion problem ?

thanks in advance and
best regards,

Nuno