use Getopt::Long;
our $realeases;
GetOptions(
    't=s' => \ our $target,
    'b=s' => \ our $buildtype,
    'r=s' => \ $releases
);

our @releases = split(/\:/,$releases);


##</code><code>##

perl script.pl -r 1:2:3 -b blah -t blah