How to send SIGTSTP, SIGCONt signals to a script scheduled using cron

[Saurabh Agarwal]

Hi all,
I had scheduled a script using cron and got pid of it when it is
running as it is running for a long time.The script is  somewhat like

cmd
sleep 10
cmd2
sleep  20
..
This is scheduled using cron now i want to send SIGTSTP signal to it
to suspend it
and SIGCONT to resume it but these signals are not working please help urgently.
kill -SIGTSTP pid

Thanks
-- 
Saurabh Agarwal
9868358071