[Zope] extra parameters in dtml-var

Hello, I have searched the internet and the maillinglist, but haven't found any answer. Why is it not possible to pass extra parameters to the called script with <dtml-var ...> in the following way: Example: <dtml-var some_other_dtml_method say="hello"> with some_other_dtml_method: <dtml-if say> I say: <dtml-var say> </dtml-if> O.K. there is the way: <dtml-var expr="some_other_dtml_method( _, REQUEST, say='Hello')"> But in my opinion this is unnessecary complicated, the first way would be more intuitive and it shouldn't be so complicated to implement it. So, was this discussed earlier and is there a reason for not doing it so? Andreas