Hello choroba,

I apologize for the untested code. And thank you for your reply.

I've update my questions and the code. And I also found a workaround , although it is not "that" perfect.

Just need copy the MyRole.nodes reference from consumer 'B' into consumer 'A'.

Anyhow, currently it works for me, but still glad to see more better/safer solution that possibly don't need any copy?

sub bind_vars
{
  my $self = shift;
  my $instance = tie(%ENV,'BBB');
  $self->BBB($instance);
  $self->nodes($instance->nodes);
  return 1;
}
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