[Zope] clear only one session var

[AM]

Hi,

This might be avery silly ques.. but how do I clear only one specific 
session variable??

Tried the followwing which didnt work:

1. REQUEST.SESSION.clear('var')
2. _.del REQUEST.SESSION['var']
3. _.del REQUEST.SESSION.var
4. _.del( REQUEST.SESSION['var'] )
5. _.del( REQUEST.SESSION.var )

Simply setting it to None wont work for me. I need to remove it from the 
session dict.

TIA
AM

-- 
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 Aseem Mohanty							   
 Neurobehavioral Systems Inc, 828 San Pablo Ave, Albany, CA 94706 
 (R) 510 7696011 (M) 510 3014871 (O) 510 5279231		  	
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 "I saw `cout' being shifted "Hello world" times to the left and  
  stopped right there!!"                        -- Steve Gonedes  
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