Hi Frederic, Frederic QUIN wrote:

Hi all,

I have a string variable "expres" which contains a python expression. I would like to do <dtml-call "expres.manage_addFolder('new_folder')"> but Zope raises an error. expres is considered as a string and is not interpreted by Zope. So I wonder if there is a function which evaluate the python expression situated in my string variable...

assuming your expression leads to the name of the object you want to add a folder, you could use: <dtml-call "_[expres].manage_addFolder('new_folder')"> (this is not so simple, if your expres contains or evaulates to something with . (periods) in it. Then you would have to split or look along the mailinglist, there was mentioned something like "get object from url" HTH Tino Wildenhain