How to modify a struct within a list.

[titanandrews]

Hello,
I see tons of posts about Class::Struct module but unfortunately none of them help me. I have a series of different instances of structs which are stored in a list. I want to be able to modify an element of a list that is in the struct that is stored in the list. Follow that? I am certain my syntax is the problem, but I just can't figure it out. Here is a simple example of what I am trying to do:

use Class::Struct;

struct defs =>
{
   name  => '$',
   types => '@',
};

my @alldefs;
my $defs = defs->new( name  => 'Fred',
                      types => ('this','that');

push(@alldefs,$defs);
my $otherdefs = defs->new( name  => 'Bilbo',
                           types => ('loot','boot');

push(@alldefs,$otherdefs);

# --- Modify the name of element 0. THIS DOES WORK!
$alldefs[0]->name = 'Barry';

# --- BUT HOW DO I GET TO AN ELEMENT OF THE LIST?? 
$alldefs[0]->types(0) = 'toot';

I get: "Can't modify non-lvalue subroutine call" compiler error.

I have also tried other methods of changing this value but have failed. Does anyone know?

many thanks,

Barry