[Zope] inserting or modifying REQUEST.form objects ???

[Brian Withun]

Can objects be added to or modified in the REQUEST.form?

I can add/modify objects in REQUEST as in:
expr="REQUEST.set('myVar',3)"

but I can't seem to do this for the REQUEST.form dictionary...
expr="REQUEST.form.set('myVar',3)"  <- error
expr="REQUEST.form['myVar']=3"      <- error

Neither the DTML-like or Python-like syntax seems to work.

..is there some syntax which can modify (in place) or
add things to REQUEST.form?  Is REQUEST.form READ-ONLY for
some reason?

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Brian Withun