The match logic can be made clearer and easier to debug like this:

use strict;

my $max;
my $min;
my $Files = 10;
my $IdleTime = 10;
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  {
  next if ! defined ($max) and ! defined ($min);
  next if ! defined ($min) and $Files < $max;
  next if ! defined ($max) and $IdleTime < $min;
  next if $Files < $max and $IdleTime < $min;
  print "Match\n";
  last;
  }
  continue
  {
  print "No match\n";
  }
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