rank problem in complete msg

[spirit]

Hi i got problem with rank
i use php psio 0.1.5 and ioftpd 5.8.5

in config file of php psio i have configured this line
$user_top = "STATS: \"%v\" \"%n. %B%u%B/%g [%mM/%fF/%p%/%sKB/s] - rank:%u\"";

and after race in stats i get like following:
(@bot)u1. someuser [15.3M/4F/80%/1355KB/s]-rank:someuser

it doesnt show rank but enters there the name of the user that raced
if any1 could help how to fix this i will appreciate
thanks