variable problems

[pike]

hi folks,

i got a little problem with pasting variables into my modul funktion it 
simple looks like this ...

##############################################
my $update = Net::DNS::Update->new($vars{zone});
        my $res = Net::DNS::Resolver->new;
           my $nameserver1 = $vars{server};
           $res->nameservers($nameserver1);


                #build the updatestring.
        my $updatestring = $vars{name}.'.'.$vars{zone}.' '.$vars{ttl}.' 
'.$vars{flag}.' '.$blankIP;


        $update->push("update", rr_add($updatestring));
        #$update->sign_tsig($key_name, $key);

        $reply = $res->send($update);
###################################################
my config vars are saved in a hash called %vars ... server,name,zone eg...
and now perl should parse the ip of the nameserver in the $res->nameserver(); 
but it wount work :
 
my $nameserver1 = $vars{server};
           $res->nameservers($nameserver1);

neither

 $res->nameservers($vars{server});

neither with  ' ' or " "

but this work :(

$res->nameservers('192.168.1.13');



Help needed



THX 4 every help i got 

best regards Pike the perln00b :D

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