Hello

im facing following error when im having condition in my leads menu.php

Warning: in_array() [function.in-array]: Wrong datatype for second argument in D:\wamp1\www\CRM\modules\Leads\Menu.php on line 53
i can leave this is issue as a warning... but still my condition is not work ... my code in modules\leads\menu.php
PHP Code:
global $user_roles;
$tech = "TECHNICIAN";    
if(in_array($tech,$user_roles)) {
    if(ACLController::checkAccess('Leads', 'edit', true))$module_menu[]=Array("index.php?module=Leads&action=EditView&return_module=Leads&return_action=DetailView", $mod_strings['LNK_NEW_LEAD'],"", 'Leads');
}