gistfile1.aw

<?php

$dependencies['Contacts']['dynamic_rollup_dep'] = array(
    'hooks' => array("edit", "view"), //not including save so that the value isn't stored in the DB
    'trigger' => 'true', //Optional, the trigger for the dependency. Defaults to 'true'.
    'triggerFields' => array('status'),
    'onload' => true,
    'actions' => array(
        array(
            'name' => 'SetValue',
            'params' => array(
            'target' => 'my_field_c',
            'value' => rollupSum($cases, "number")
            )
        )
    )
);