Hi there,
I'm a little unsure as to what you're asking, but if you're asking for the substring you create to be reversed, you can use reverse thusly:

my $str = "1234";
my $ss  = reverse substr($str, 2);
print $ss;
[download]

Hope that helps,
davis
Is this going out live?
No, Homer, very few cartoons are broadcast live - it's a terrible strain on the animator's wrist