issue with cron and a simple sh script

[Pietro Sammarco]

[ ... ]

>#crontab -u pietro -e
>SHELL=/bin/sh
>PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
>
>MAILTO="pietro"
>* * * * * $HOME/.shrc; sh /var/cron/tabs/resumewlan.sh >/dev/null

Apparenty it only works with the root user. I feel so dumb now..