# use VersionTest qw/1.2.3 foo bar/;
# the above is no longer Kosher

use VersionTest v1.2.3 qw/foo bar/;
# do it this way (no comma).

##</code><code>##

use VersionTest '1.2.3' qw/foo bar/; #string

my $needed= v2.3.4;
use VersionTest $needed qw/foo bar/; #not a literal

##</code><code>##

use VersionTest qw/1.2.3 foo bar/;