I've been trolling and searching, but have not found anything that helps me. If you know of a thread please link me. I have a structure containing a hash. I want to pass the structure into a sub by reference. While in the sub, I want access to the hash. Please cure my stupidity. heres a stripped down example: 
use Class::Struct;


struct MyStruct => {
    hash1 => '%',
};

#fill the struct's hash with some data
my $test = MyStruct->new(
                         hash1=>{one=>onesdata}
                       );

use_hash(\$test);

while(($key,$val) = each %{$test->hash1}){
        print "$key=$val\n";
}

sub use_hash{
    my $ref = shift;  #obtain the passed in reference
    $$ref->hash1{two} = 'twosdata';  #PROBLEM
}

[download]
I get an error on the line marked problem. Can anyone explain my error? Many thanks in advance.

In reply to passing object references into subs by Avox

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