[smarty] Forum Topics

i'm use smarty 3 and write [CODE]$smarty = new Smarty(); $smarty->config_dir='./smarty/sconfigs/'; $smarty->template_dir='./templates/new/'; $smarty->compile_dir='./smarty/stemplates_c/'; $smarty->cache_dir='./smarty/scache/'; if(!$smarty->isCached('index.tpl','default')) { $smarty->assign("u",refresh_user_info(),true); } $smarty->display('index.tpl','default'); [/CODE] but {$u} is missing when i add if($smarty->isCached help please!