Tom Deprez schrieb:

I tried several things but none gave a good result :-(

I've a property sheet call InstanceConstants. Assume there is a property called 'Category'.

Now how can I automatically fill this value with a string, thus not through addForm (user intervention)?

eg. Category = 'TEST'

I assume this piece of code has to be placed in the _add method, but how does it look like?

<dtml-call "REQUEST.set('Category','TEST')">

doesn't work and all my other trials with using the propertysheets names etc don't work either :-(

In your constructor method you something like <dtml-with "Your_Zclass.createInObjectManager(REQUEST['id'], REQUEST)"> <dtml-call "REQUEST.set('Category','TEST')"> <dtml-call "propertysheets.InstanceConstants.manage_editProperties(REQUEST)"> </dtml-with> should work. There's a short description about this in the constructor method, when it is added to your ZClass by default. hth, Thomas