supervisorctl clear not working for numprocs more than 1

[jazuly]

hi, im trying to clear my log with command supervisorctl clear testing1:*

but it show me error testing1:None: ERROR (no such process)

my configuration file

[program:testing1]
command=/root/test.sh
process_name=%(program_name)s_%(process_num)02d
numprocs=3
autostart=true
startsecs=10
startretries=3
autorestart=true
stopsignal=TERM
stopwaitsecs=10
stopasgroup=false
killasgroup=false
redirect_stderr=true
stdout_logfile=/etc/supervisor/logs/testing1.log
stdout_logfile_maxbytes=10MB
stdout_logfile_backups=0