A few things wrong: you don't want these to be lexical (my) variables!

my @ISA    = qw(Exporter);
my @EXPORT = qw(Prt Time);

They are not available to Exporter as lexicals, they need to be global symbol-table vars (thus the use vars).

Heh, but the real reason Test::Prt still won't work is because Test is a very, very bad name for your first module. There is already a Test module in your Perl distribution, and your script is most likely loading that instead. A use lib '.' line in the script will tell Perl to look in the current directory to load modules first. Either do that, or change the name of your module's namespace.

blokhead