zentao/extension/or/my/ext/lang/en/ipd.php

<?php
$lang->my->featureBar['work']['demand']       = $lang->my->featureBar['work']['requirement'];
$lang->my->featureBar['contribute']['demand'] = $lang->my->featureBar['contribute']['requirement'];

$lang->my->demand = 'My Demands';
$lang->my->noTask = 'No Tasks';