[p4] perl question

[Kilaru Sambaiah]

Hi All,
  I am newbie to p4 and I have a question on p4 perl.
  I wanted to run
p4 label @labelname in perl

I can run as
@files_list = $p4->Run("files",  "@labelname");
but perl try to interpolate @ to array. How I can avoid this. I also have
another
question as my labelname is
$label = "label_name"
I would like to get files which are tagged as $label.

thanks and regards,
Sam