It's good that you've found a solution to your problem, but you should realize that the  /g match modifier in the
    $timeLimit =~ m/startTime="(.*?)"/g;
statement does nothing more than pose a potential pitfall for future code, either in execution or development. Why leave it in?

Also, please pay attention to other replies advocating an XML-parsing approach to what is essentially XML.

And if you choose to stick with regexes, please consider kcott's wise advice here about using  ([^"]*) to capture the unescaped body of a double-quoted string.