dexterity fields missing from table columns of collection in plone 4.3

Is there a way to display the fields of a dexterity type in the tabular 
view of a collection?

Specifically:

I define a dexterity content type 'mytype' with fields 'f1' and 'f2' and 
then define a collection of objects of type 'mytype' (by selecting 
'Type' 'Is' 'mytype' in the dropdowns).  In the collection edit tab, 
under "Table Columns / Select which fields to display when 'Tabular 
view' is selected in the display menu", the f1 and f2 fields of mytype 
are not listed.  What do I need to configure in order to add mytype's 
dexterity fields to that list of collection columns?  This is plone 4.3.3

Thanks,
John



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