[Zope] is possible use request.set in a zpt?

Hi list I used before with dtml something like this <dtml-call "request.set('sumVar',0)"> <dtml-in ...> <dtml-call "request.set('sumVar', sumVar + queryVar)"> </dtml-in> The sum is <dtml-var sumVar> This is possible to made with ZPT? -- ________________________________________ Lo bueno de vivir un dia mas es saber que nos queda un dia menos de vida