$ENV{'QUERY_STRING'} is meant to be read, not written to. All you need to do is something like: 
$url = "http://www.foo.com/cgi-bin/test2.pl?JobID=";
$url .= join('+', @jid);
print "<a href=\"$url\">$url</a>\n";

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In reply to Re: How to get into $ENV{'QUERY_STRING'}? by httptech
in thread How to get into $ENV{'QUERY_STRING'}? by dominica1000

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