whatz wrong here ?

[igotux igotux]

Hi Team,

Can someone explain what is wrong happeneing here ?

$ perl -e 'use Business::ISBN; $isbn_object = new
Business::ISBN('0-59610-206-2');print $isbn->as_string;'
Can't call method "as_string" on an undefined value at -e line 1.
$

Thanks,
Tux....