Get alfresco ID from document uploaded via 'Retrieve Alfresco Properties'

[gregorio2501]

I uploaded a file via 'Publish to Alfresco task' and the file is stored in alfresco.

I'm using 'Retrieve Alfresco Properties', how can I get de ID from the document?

I tested in 'File Property' with this values:

• id
• uuid
• entry.id

I get the value null.