zrangebyscore redis in perl -

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i'm using redis.pm in perl scrpit , try execute next command:

zrevrangebyscore <key> <highscore> 0 withscores limit 0 1

in appliance redis documentation write next , it's working fine

my $data = { $redis->zrevrangebyscore($rkey, $ipl, 0, 'withscores') };

but when try subst 'limit...' in perl command:

my $data = { $redis->zrevrangebyscore($rkey, $ipl, 0, 'withscores','limit 0 1') };

i got error

[zrevrangebyscore] err syntax error,  @ /usr/local/lib/perl5/site_perl/5.14/redis.pm line 163     redis::__anon__(undef, 'err syntax error') called @ /usr/local/lib/perl5/site_perl/5.14/redis.pm line 195     redis::wait_one_response('redis=hash(0x801075300)') called @ /usr/local/lib/perl5/site_perl/5.14/redis.pm line 183     redis::wait_all_responses('redis=hash(0x801075300)') called @ /usr/local/lib/perl5/site_perl/5.14/redis.pm line 172

how can pass arg 'limit 0 1' in redis.pm ?

if looking iterate through sorted set, , fetch highest entry, use 

zrange

(zrange documentation)

instead of zrevrangebyscore.

my $start = -1; #-1 last element = element highest score $stop = -1; while (my $data = $redis->zrange($rkey, $start--, $stop--, 'withscores')) {    #fetch ultimate element, penultimate, etc.... };

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