Objective format: the "item" namespace.

>>>>templates/test.tpl
{$variable.item}
{$global.variable.item}

>>>>data.php

$obj1 = new stdClass;
$obj1->item = 'FOO';
$obj2 = new stdClass;
$obj2->item = 'BAR';

$view->variable = $obj1;
Opt_View::assignGlobal('variable', $obj2);

$view->setFormat('variable', 'Objective');
Opt_View::setFormatGlobal('variable', 'Objective');

>>>>expected.txt
OUTPUT

>>>>result.txt
FOO
BAR