how do i have to nest multicheckboxes so that they are named like this 'foo[]['bar']' .

i've used subforms but they give me naming like this 'foo[bar][]'.

my code:

$sub = new Zend_Form_SubForm('sub');

$wish = new Zend_Form_Element_MultiCheckbox('bar');

$wish

->setMultiOptions($education_direction->getAll())
->setLabel('Wish')    
->setRequired(true);

$sub->addElements(array( $wish ));

$this->addSubForm($sub, 'foo');