[PHPTAL] Uncomplete arrays

[Luciano Andrade]

Any one use an incomplete array to specify a tal, for instance:
conf = array('a1' => array('contro' => 'image',......),
                  'a2' => array('control' => 'default',......),
)
but since a2 uses control default, its not set,
The proble si when i try to use in TAL
tal:condition, trow an exception
so y try with tal:on-error but in the manual only use string shold use a
structured: onerrorControl
any other idea?