JoseLuis de la Rosa Triviño wrote:
I modified the expression to {{{python:portal.portal_directories.members[context.aq_parent.getId()].center}}}

At document creation, context aka object is None

AFAIK you can't get your object's container from a field expression (since the document doesn't exist yet); either change your document's workflow (adding a script after the create transition), or register an event handler (there's an example I think on Florent's blog)

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