'other' cronjobs any luck

Has anyone got any luck with "other" Cronjobs?

I get just Exec Format Error when trying to run a shell script. Is only binary supported?
There's chroot so accessing binaries like bash or php outside userdir is not possible.

Hello all.

I got a reply from support that "other" Cronjobs are not supported and menu entry will be going out soon. To run any command, run it from php through system()