The original implementation were passing the object's url. So
we need to get the object's value again through portal_catalog.
But if we create a new Support Request just now, and then create
a post to use this SR as follow up. We can't get the SR value due
to the Vincent's reindex change: https://lab.nexedi.com/vpelletier/erp5/commit/2e35fa174ebafd2a6c9af84c116c35c29a0261c1
So pass the object's value directly.