C:\test>timedCommand.pl
Thread 1 terminated abnormally: Modification of a read-only value attempted at C:\test\timedCommand.pl line 15.
Thread 2 terminated abnormally: Modification of a read-only value attempted at C:\test\timedCommand.pl line 15.
Thread 3 terminated abnormally: Modification of a read-only value attempted at C:\test\timedCommand.pl line 15.