[Zope] What's the type of something marshalled to a "record"?

[Jean Jordaan]

Hi all

Short version of my question: how do I know when a form variable 
has been marshalled to a record? _.same_type(var, ????)

Long version:

If I do this:

<p> <input
    name="properties_to_show.ContactPerson:record:list"
    type="checkbox"
    value="id"> id 
<br> <input
    name="properties_to_show.ContactPerson:record:list"
    type="checkbox"
    value="Category"> Category
[...]

I can successfully do this:

<dtml-let p2s="REQUEST.form['properties_to_show']">
<dtml-in "p2s.keys()">
<dtml-var sequence-item>
</dtml-in> 
</dtml-let>

But if I do this:

<dtml-let p2s="REQUEST.form['properties_to_show']">
<dtml-if "_.same_type(p2s, {})">    it's a dict!
<dtml-elif "_.same_type(p2s, p2s)"> it's it!
</dtml-if> 
</dtml-let>

then I get "it's it!" instead of "it's a dict!".

The question again: how do I know when a form variable has been 
marshalled to a record? _.same_type(var, ????)

Lots of TIA .. 
Jean Jordaan