[Zope] dtml-var "sideway" + dot question

Hi, I am trying to add a file attachment stored in a LocalFS object using the following code <dtml-with intranet> <dtml-with gracie> <dtml-var file.pdf> </dtml-with> </dtml-with> The above code works, but how can I do the same thing in one line? <dtml-var expr="intranet.gracie.file.pdf"> does not work. Using other words, how can I treat the dot of the id? TIA Jordi